{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,28]],"date-time":"2026-03-28T04:11:55Z","timestamp":1774671115605,"version":"3.50.1"},"reference-count":65,"publisher":"Elsevier BV","issue":"6","license":[{"start":{"date-parts":[[2016,6,1]],"date-time":"2016-06-01T00:00:00Z","timestamp":1464739200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2016,6,1]],"date-time":"2016-06-01T00:00:00Z","timestamp":1464739200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"content-domain":{"domain":["ajog.org","clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["American Journal of Obstetrics and Gynecology"],"published-print":{"date-parts":[[2016,6]]},"DOI":"10.1016\/j.ajog.2015.12.007","type":"journal-article","created":{"date-parts":[[2015,12,15]],"date-time":"2015-12-15T19:04:49Z","timestamp":1450206289000},"page":"739.e1-739.e10","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":35,"title":["Vaginal progesterone combined with cervical pessary: A chance for pregnancies at risk for preterm birth?"],"prefix":"10.1016","volume":"214","author":[{"given":"Nathanael","family":"Stricker","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nina","family":"Timmesfeld","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ioannis","family":"Kyvernitakis","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Janina","family":"Goerges","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9020-1428","authenticated-orcid":false,"given":"Birgit","family":"Arabin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/j.ajog.2015.12.007_bib1","doi-asserted-by":"crossref","first-page":"2162","DOI":"10.1016\/S0140-6736(12)60820-4","article-title":"National, regional, and worldwide estimates of preterm birth rates in the year 2010 with time trends since 1990 for selected countries: a systematic analysis and implications","volume":"379","author":"Blencowe","year":"2012","journal-title":"Lancet"},{"key":"10.1016\/j.ajog.2015.12.007_bib2","doi-asserted-by":"crossref","first-page":"75","DOI":"10.1016\/S0140-6736(08)60074-4","article-title":"Epidemiology and causes of preterm birth","volume":"371","author":"Goldenberg","year":"2008","journal-title":"Lancet"},{"key":"10.1016\/j.ajog.2015.12.007_bib3","doi-asserted-by":"crossref","first-page":"154","DOI":"10.1542\/peds.76.2.154","article-title":"Prevention of preterm births: a perinatal study in Haguenau, France","volume":"76","author":"Papiernik","year":"1985","journal-title":"Pediatrics"},{"key":"10.1016\/j.ajog.2015.12.007_bib4","doi-asserted-by":"crossref","first-page":"1549","DOI":"10.1016\/S0140-6736(14)60082-9","article-title":"Effect of smoke-free legislation on perinatal and child health: a systematic review and meta-analysis","volume":"383","author":"Been","year":"2014","journal-title":"Lancet"},{"key":"10.1016\/j.ajog.2015.12.007_bib5","doi-asserted-by":"crossref","first-page":"77","DOI":"10.1002\/jcu.1870190204","article-title":"Transvaginal and transabdominal ultrasonography of the uterine cervix during pregnancy","volume":"19","author":"Andersen","year":"1991","journal-title":"J\u00a0Clin Ultrasound"},{"key":"10.1016\/j.ajog.2015.12.007_bib6","doi-asserted-by":"crossref","first-page":"567","DOI":"10.1056\/NEJM199602293340904","article-title":"The length of the cervix and the risk of spontaneous premature delivery: National Institute of Child Health and Human Development Maternal Fetal Medicine Unit Network","volume":"334","author":"Iams","year":"1996","journal-title":"N\u00a0Engl J Med"},{"key":"10.1016\/j.ajog.2015.12.007_bib7","first-page":"65","article-title":"Double blind study of an agent to prevent preterm delivery among women at increased risk [Etude en double aveugle d\u2019un medicament prevenant la survenue prematuree de l\u2019accouchement chez les femmes a risque eleve d\u2019accouchement premature]","volume":"3","author":"Papiernik-Berkhauer","year":"1970","journal-title":"Edition Schering Serie IV"},{"key":"10.1016\/j.ajog.2015.12.007_bib8","doi-asserted-by":"crossref","first-page":"127","DOI":"10.1016\/S0140-6736(59)92242-1","article-title":"Treatment of habitual abortion due to cervical incompetence","volume":"2","author":"Cross","year":"1959","journal-title":"Lancet"},{"key":"10.1016\/j.ajog.2015.12.007_bib9","doi-asserted-by":"crossref","first-page":"462","DOI":"10.1056\/NEJMoa067815","article-title":"Progesterone and the risk of preterm birth among women with a short cervix","volume":"357","author":"Fonseca","year":"2007","journal-title":"N\u00a0Engl J Med"},{"key":"10.1016\/j.ajog.2015.12.007_bib10","doi-asserted-by":"crossref","first-page":"18","DOI":"10.1002\/uog.9017","article-title":"Vaginal progesterone reduces the rate of preterm birth in women with a sonographic short cervix: a multicenter, randomized, double-blind, placebo-controlled trial","volume":"38","author":"Hassan","year":"2011","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib11","doi-asserted-by":"crossref","first-page":"122","DOI":"10.1515\/JPM.2003.017","article-title":"Is treatment with vaginal pessaries an option in patients with a sonographically detected short cervix?","volume":"31","author":"Arabin","year":"2003","journal-title":"J\u00a0Perinat Med"},{"key":"10.1016\/j.ajog.2015.12.007_bib12","doi-asserted-by":"crossref","first-page":"1800","DOI":"10.1016\/S0140-6736(12)60030-0","article-title":"Cervical pessary in pregnant women with a short cervix (PECEP): an open-label randomised controlled trial","volume":"379","author":"Goya","year":"2012","journal-title":"Lancet"},{"key":"10.1016\/j.ajog.2015.12.007_bib13","doi-asserted-by":"crossref","first-page":"1849","DOI":"10.1016\/S0140-6736(04)16351-4","article-title":"Cervical cerclage for prevention of preterm delivery in women with short cervix: randomised controlled trial","volume":"363","author":"To","year":"2004","journal-title":"Lancet"},{"key":"10.1016\/j.ajog.2015.12.007_bib14","unstructured":"Payo Martinez C. Prevention of Preterm Birth in Pregnant Women at Risk Identified by Ultrasound: Evaluation of Two Treatment Strategies (PESAPRO). NLM Identifier: NCT01643980: Puerta de Hierro University Hospital, 2012. Available at: ClinicalTrials.gov. Accessed February 8, 2016"},{"key":"10.1016\/j.ajog.2015.12.007_bib15","unstructured":"Shu-Chen C. Efficacy Study of a Cervical Pessary Containing Progesterone for the Prevention of Preterm Delivery (PCP002). NLM Identifier: NCT02225353: Laboratorios Andromaco S.A., 2014. Available at: ClinicalTrials.gov. Accessed February 8, 2016"},{"key":"10.1016\/j.ajog.2015.12.007_bib16","unstructured":"Walfisch A, Reder D. Cervical Pessary vs Vaginal Progesterone in Preventing Preterm Birth Among Women Presenting With Short Cervix: An Open-label Randomized Controlled Trial. NLM Identifier: NCT02470676: Hillel Yaffe Medical Center, 2015. Available at: ClinicalTrials.gov. Accessed February 8, 2016"},{"key":"10.1016\/j.ajog.2015.12.007_bib17","unstructured":"Koullali B, Pajkrt E, Mol BW, Bekedam D. Pessary or Progesterone to Prevent Preterm birth in women with short cervical length Quadruple P. Nederlands Trial Register, Identifier NTR4414: Academic Medical Center (AMC), Amsterdam, 2014. Available at: http:\/\/www.trialregister.nl\/trialreg\/admin\/rctview.asp?TC=4414. Accessed February 8, 2016."},{"key":"10.1016\/j.ajog.2015.12.007_bib18","doi-asserted-by":"crossref","first-page":"390","DOI":"10.1002\/uog.12540","article-title":"Cervical pessaries for prevention of spontaneous preterm birth: past, present and future","volume":"42","author":"Arabin","year":"2013","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib19","doi-asserted-by":"crossref","first-page":"459","DOI":"10.1002\/uog.6332","article-title":"Reference range for cervical length throughout pregnancy: non-parametric LMS-based model applied to a large sample","volume":"33","author":"Salomon","year":"2009","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib20","doi-asserted-by":"crossref","first-page":"227","DOI":"10.7863\/jum.2002.21.3.227","article-title":"Transvaginal sonographic cervical length changes during normal pregnancy","volume":"21","author":"Gramellini","year":"2002","journal-title":"J\u00a0Ultrasound Med"},{"key":"10.1016\/j.ajog.2015.12.007_bib21","unstructured":"Franca MS, Hamamoto TENK, Hatanaka AR, Mattar R, Moron AF. The importance of\u00a0learning curve in practice of cervical pessary: Abstract CD. Crete: Fetal Medicine Foundation;\u00a02015."},{"key":"10.1016\/j.ajog.2015.12.007_bib22","doi-asserted-by":"crossref","first-page":"154","DOI":"10.1159\/000335686","article-title":"First-trimester screening for spontaneous preterm delivery with maternal characteristics and cervical length","volume":"31","author":"Greco","year":"2012","journal-title":"Fetal Diagn Ther"},{"key":"10.1016\/j.ajog.2015.12.007_bib23","doi-asserted-by":"crossref","first-page":"217","DOI":"10.1046\/j.1469-0705.2001.00369.x","article-title":"Cervical assessment at the routine 23-week scan: standardizing techniques","volume":"17","author":"To","year":"2001","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib24","doi-asserted-by":"crossref","first-page":"200","DOI":"10.1046\/j.1469-0705.2001.00437.x","article-title":"Cervical length and funneling at 23 weeks of gestation in the prediction of spontaneous early preterm delivery","volume":"18","author":"To","year":"2001","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib25","doi-asserted-by":"crossref","first-page":"112","DOI":"10.1016\/j.ajog.2013.09.002","article-title":"The use of a comparability scoring system in reporting observational studies","volume":"210","author":"Vintzileos","year":"2014","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib26","doi-asserted-by":"crossref","first-page":"149","DOI":"10.1111\/j.1471-0528.1990.tb01740.x","article-title":"Progestogen administration in pregnancy may prevent preterm delivery","author":"Keirse","year":"1990","journal-title":"BJOG"},{"key":"10.1016\/j.ajog.2015.12.007_bib27","doi-asserted-by":"crossref","first-page":"421","DOI":"10.1016\/j.ajog.2013.04.027","article-title":"Progesterone is not the same as 17\u03b1-hydroxyprogesterone caproate: implications for obstetrical practice","volume":"208","author":"Romero","year":"2013","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib28","doi-asserted-by":"crossref","first-page":"2379","DOI":"10.1056\/NEJMoa035140","article-title":"Prevention of recurrent preterm delivery by 17 alpha-hydroxyprogesterone caproate","volume":"348","author":"Meis","year":"2003","journal-title":"N\u00a0Engl J Med"},{"key":"10.1016\/j.ajog.2015.12.007_bib29","unstructured":"Birch R. Confirmatory Study of 17P Versus Vehicle for the Prevention of Preterm Birth in Women With a Previous Singleton Spontaneous Preterm Delivery (PROLONG). NLM Identifier: NCT01004029: Lumara Health Inc., 2009. Available at: ClinicalTrials.gov. Accessed February 8, 2016"},{"key":"10.1016\/j.ajog.2015.12.007_bib30","doi-asserted-by":"crossref","first-page":"419","DOI":"10.1067\/mob.2003.41","article-title":"Prophylactic administration of progesterone by vaginal suppository to reduce the incidence of spontaneous preterm birth in women at increased risk: a randomized placebo-controlled double-blind study","volume":"188","author":"DaFonseca","year":"2003","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib31","doi-asserted-by":"crossref","first-page":"687","DOI":"10.1002\/uog.5158","article-title":"Progesterone vaginal gel for the reduction of recurrent preterm birth: primary results from a randomized, double-blind, placebo-controlled trial","volume":"30","author":"O\u2019Brien","year":"2007","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib32","first-page":"263","article-title":"Therapie in der Geburtshilfe und Gyn\u00e4kologie Band 2: Gyn\u00e4kologie","author":"Pessartherapie","year":"1991","journal-title":"Georg Thieme Verlag: Stuttgart-New York"},{"key":"10.1016\/j.ajog.2015.12.007_bib33","doi-asserted-by":"crossref","first-page":"426","DOI":"10.1002\/uog.12507","article-title":"Arabin cervical pessary in women at high risk of preterm birth: a magnetic resonance imaging observational follow-up study","volume":"42","author":"Cannie","year":"2013","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib34","doi-asserted-by":"crossref","first-page":"146","DOI":"10.1002\/uog.12300","article-title":"Vaginal progesterone, cerclage or cervical pessary for preventing preterm birth in asymptomatic singleton pregnant women with a history of preterm birth and a sonographic short cervix","volume":"41","author":"Alfirevic","year":"2013","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib35","doi-asserted-by":"crossref","first-page":"2693","DOI":"10.3109\/14767058.2012.712559","article-title":"Arabin cerclage pessary in the management of cervical insufficiency","volume":"25","author":"Ting","year":"2012","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2015.12.007_bib36","first-page":"283","article-title":"Cerclage pessary for preventing preterm birth in women with a singleton pregnancy and a short cervix at 20 to 24 weeks: a randomized controlled trial","volume":"30","author":"Hui","year":"2013","journal-title":"Am J Perinatol"},{"key":"10.1016\/j.ajog.2015.12.007_bib37","doi-asserted-by":"crossref","first-page":"181","DOI":"10.1097\/01.AOG.0000168435.17200.53","article-title":"Cerclage for short cervix on ultrasonography: meta-analysis of trials using individual patient-level data","volume":"106","author":"Berghella","year":"2005","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib38","doi-asserted-by":"crossref","first-page":"375.e1","DOI":"10.1016\/j.ajog.2009.08.015","article-title":"Multicenter randomized trial of cerclage for preterm birth prevention in high-risk women with shortened midtrimester cervical length","volume":"201","author":"Owen","year":"2009","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib39","doi-asserted-by":"crossref","first-page":"663","DOI":"10.1097\/AOG.0b013e31820ca847","article-title":"Cerclage for short cervix on ultrasonography in women with singleton gestations and previous preterm birth: a meta-analysis","volume":"117","author":"Berghella","year":"2011","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib40","doi-asserted-by":"crossref","first-page":"468","DOI":"10.1002\/uog.7547","article-title":"Effectiveness of cerclage according to severity of cervical length shortening: a meta-analysis","volume":"35","author":"Berghella","year":"2010","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib41","doi-asserted-by":"crossref","first-page":"1393","DOI":"10.1016\/j.ajog.2004.06.087","article-title":"Prior cone biopsy: prediction of preterm birth by cervical ultrasound","volume":"191","author":"Berghella","year":"2004","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib42","doi-asserted-by":"crossref","first-page":"225","DOI":"10.3802\/jgo.2010.21.4.225","article-title":"Pregnancy outcome after cervical conization: risk factors for preterm delivery and the efficacy of prophylactic cerclage","volume":"21","author":"Nam","year":"2010","journal-title":"J\u00a0Gynecol Oncol"},{"key":"10.1016\/j.ajog.2015.12.007_bib43","first-page":"390","article-title":"Prophylactic cerclage in pregnancy: effect in women with a history of conization","volume":"42","author":"Zeisler","year":"1997","journal-title":"J\u00a0Reprod Med"},{"key":"10.1016\/j.ajog.2015.12.007_bib44","doi-asserted-by":"crossref","first-page":"1003","DOI":"10.1055\/s-0034-1383271","article-title":"Is early treatment with a cervical pessary an option in patients with a history of surgical conisation and a short cervix?","volume":"74","author":"Kyvernitakis","year":"2014","journal-title":"Geburtshilfe Frauenheilkd"},{"key":"10.1016\/j.ajog.2015.12.007_bib45","doi-asserted-by":"crossref","first-page":"124.e1","DOI":"10.1016\/j.ajog.2011.12.003","article-title":"Vaginal progesterone in women with an asymptomatic sonographic short cervix in the midtrimester decreases preterm delivery and neonatal morbidity: a systematic review and metaanalysis of individual patient data","volume":"206","author":"Romero","year":"2012","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib46","doi-asserted-by":"crossref","first-page":"697","DOI":"10.1002\/uog.5159","article-title":"Vaginal progesterone is associated with a decrease in risk for early preterm birth and improved neonatal outcome in women with a short cervix: a secondary analysis from a randomized, double-blind, placebo-controlled trial","volume":"30","author":"DeFranco","year":"2007","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib47","doi-asserted-by":"crossref","first-page":"374.e1","DOI":"10.1016\/j.ajog.2009.01.047","article-title":"Is midtrimester short cervix a sign of intraamniotic inflammation?","volume":"200","author":"Kiefer","year":"2009","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib48","doi-asserted-by":"crossref","first-page":"433.e1","DOI":"10.1016\/j.ajog.2010.02.007","article-title":"Patients with an asymptomatic short cervix (\u226415\u00a0mm) have a high rate of subclinical intraamniotic inflammation: implications for patient counseling","volume":"202","author":"Vaisbuch","year":"2010","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib49","doi-asserted-by":"crossref","first-page":"314.e1","DOI":"10.1016\/j.ajog.2008.01.029","article-title":"Preventing cervical ripening: the primary mechanism by which progestational agents prevent preterm birth?","volume":"198","author":"Xu","year":"2008","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib50","doi-asserted-by":"crossref","first-page":"5477","DOI":"10.1210\/en.2010-0426","article-title":"Progesterone increases systemic and local uterine proportions of CD4+CD25+ Treg cells during midterm pregnancy in mice","volume":"151","author":"Mao","year":"2010","journal-title":"Endocrinology"},{"key":"10.1016\/j.ajog.2015.12.007_bib51","doi-asserted-by":"crossref","first-page":"1778","DOI":"10.4049\/jimmunol.1003919","article-title":"Progesterone promotes differentiation of human cord blood fetal T cells into T regulatory cells but suppresses their differentiation into Th17 cells","volume":"187","author":"Lee","year":"2011","journal-title":"J\u00a0Immunol"},{"key":"10.1016\/j.ajog.2015.12.007_bib52","doi-asserted-by":"crossref","first-page":"223.e1","DOI":"10.1016\/j.ajog.2013.01.020","article-title":"Prevention of preterm birth by progestational agents: what are the molecular mechanisms?","volume":"208","author":"Nold","year":"2013","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib53","doi-asserted-by":"crossref","first-page":"743","DOI":"10.1002\/uog.7606","article-title":"Effect of vaginal progesterone, administered to prevent preterm birth, on impedance to blood flow in fetal and uterine circulation","volume":"36","author":"Barda","year":"2010","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib54","doi-asserted-by":"crossref","first-page":"846.e1","DOI":"10.1016\/j.ajog.2015.08.010","article-title":"Vaginal progesterone, but not 17\u03b1-hydroxyprogesterone caproate, has antiinflammatory effects at the murine maternal-fetal interface","volume":"213","author":"Furcron","year":"2015","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib55","doi-asserted-by":"crossref","first-page":"1931","DOI":"10.1002\/ijc.29235","article-title":"Maternal use of fertility drugs and risk of cancer in children: a nationwide population-based cohort study in Denmark","volume":"136","author":"Hargreave","year":"2015","journal-title":"Int J Cancer"},{"key":"10.1016\/j.ajog.2015.12.007_bib56","doi-asserted-by":"crossref","first-page":"45","DOI":"10.1016\/j.ajog.2004.03.090","article-title":"Nuchal translucency and other first-trimester sonographic markers of chromosomal abnormalities","volume":"191","author":"Nicolaides","year":"2004","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib57","doi-asserted-by":"crossref","first-page":"3.e1","DOI":"10.1016\/j.ajog.2015.08.051","article-title":"Cervical pessary placement for prevention of preterm birth in unselected twin pregnancies: a randomized controlled trial","volume":"214","author":"Nicolaides","year":"2016","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib58","doi-asserted-by":"crossref","first-page":"1341","DOI":"10.1016\/S0140-6736(13)61408-7","article-title":"Cervical pessaries for prevention of preterm birth in women with a multiple pregnancy (ProTWIN): a multicentre, open-label randomised controlled trial","volume":"382","author":"Liem","year":"2013","journal-title":"Lancet"},{"key":"10.1016\/j.ajog.2015.12.007_bib59","first-page":"220","article-title":"Cervical length as a predictor of preterm delivery: gestational age-related percentiles vs fixed cut-offs","volume":"78","author":"Gramellini","year":"2007","journal-title":"Acta Biomed"},{"key":"10.1016\/j.ajog.2015.12.007_bib60","doi-asserted-by":"crossref","first-page":"378","DOI":"10.1016\/j.ajog.2013.10.804","article-title":"Can cervical length and obstetric history identify asymptomatic women at low risk for preterm birth after a previous preterm birth: a re-analysis of individual patient data","volume":"210","author":"Kleinrouweler","year":"2014","journal-title":"Am J Obstet Gynecol"},{"issue":"suppl1","key":"10.1016\/j.ajog.2015.12.007_bib61","doi-asserted-by":"crossref","first-page":"P11","DOI":"10.1186\/1745-6215-16-S1-P11","article-title":"Core outcomes set for studies on primary prevention of preterm birth","volume":"16","author":"Van\u2019t Hooft","year":"2015","journal-title":"Trials"},{"key":"10.1016\/j.ajog.2015.12.007_bib62","doi-asserted-by":"crossref","first-page":"554.e1","DOI":"10.1016\/j.ajog.2015.06.020","article-title":"Cost-effectiveness of\u00a0transvaginal ultrasound cervical length screening in singletons without a prior preterm birth: an update","volume":"213","author":"Werner","year":"2015","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib63","doi-asserted-by":"crossref","first-page":"338","DOI":"10.1002\/uog.13432","article-title":"Economic analysis of use of pessary to prevent preterm birth in women with multiple pregnancy (ProTWIN trial)","volume":"44","author":"Liem","year":"2014","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib64","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1002\/uog.9073","article-title":"Universal cervical-length screening and vaginal progesterone prevents early preterm births, reduces neonatal morbidity and is cost saving: doing nothing is no longer an option","volume":"38","author":"Campbell","year":"2011","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.12.007_bib65","doi-asserted-by":"crossref","first-page":"467","DOI":"10.1007\/s40273-014-0133-2","article-title":"Cost and cost effectiveness of vaginal progesterone gel in reducing preterm birth: an economic analysis of the PREGNANT trial","volume":"32","author":"Pizzi","year":"2014","journal-title":"Pharmacoeconomics"}],"container-title":["American Journal of Obstetrics and Gynecology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002937815024886?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002937815024886?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,9,11]],"date-time":"2025-09-11T11:08:02Z","timestamp":1757588882000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0002937815024886"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016,6]]},"references-count":65,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2016,6]]}},"alternative-id":["S0002937815024886"],"URL":"https:\/\/doi.org\/10.1016\/j.ajog.2015.12.007","relation":{"has-review":[{"id-type":"doi","id":"10.3410\/f.726032945.793521413","asserted-by":"object"}]},"ISSN":["0002-9378"],"issn-type":[{"value":"0002-9378","type":"print"}],"subject":[],"published":{"date-parts":[[2016,6]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Vaginal progesterone combined with cervical pessary: A chance for pregnancies at risk for preterm birth?","name":"articletitle","label":"Article Title"},{"value":"American Journal of Obstetrics and Gynecology","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.ajog.2015.12.007","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2015 Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}]}}