{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T08:25:54Z","timestamp":1791275154722,"version":"4.1.0"},"reference-count":63,"publisher":"Elsevier BV","issue":"1","license":[{"start":{"date-parts":[[2004,10,1]],"date-time":"2004-10-01T00:00:00Z","timestamp":1096588800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Early Human Development"],"published-print":{"date-parts":[[2004,10]]},"DOI":"10.1016\/j.earlhumdev.2004.05.006","type":"journal-article","created":{"date-parts":[[2004,7,30]],"date-time":"2004-07-30T05:37:34Z","timestamp":1091165854000},"page":"43-64","source":"Crossref","is-referenced-by-count":121,"title":["Sleeping and waking state development in preterm infants"],"prefix":"10.1016","volume":"80","author":[{"given":"Diane","family":"Holditch-Davis","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mark","family":"Scher","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Todd","family":"Schwartz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Diane","family":"Hudson\u2013Barr","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.earlhumdev.2004.05.006_bib1","doi-asserted-by":"crossref","first-page":"255","DOI":"10.1006\/drev.1995.1010","article-title":"Infant sleep\u2013wake characteristics: relation to neurological status and the prediction of developmental outcome","volume":"15","author":"Halpern","year":"1995","journal-title":"Dev. Rev."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib2","first-page":"159","article-title":"A biological perspective and a behavioral model for assessment of premature infants","volume":"vol. 6","author":"Thoman","year":"1982"},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib3","doi-asserted-by":"crossref","first-page":"523","DOI":"10.1093\/sleep\/18.7.523","article-title":"Sleep rhythmicity in premature infants: implications for developmental status","volume":"18","author":"Borghese","year":"1995","journal-title":"Sleep"},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib4","doi-asserted-by":"crossref","first-page":"93","DOI":"10.1016\/S0378-3782(02)00018-X","article-title":"Sleep\u2013wake patterns in preterm infants and 6 month's home environment: implications for early cognitive development","volume":"68","author":"Gertner","year":"2002","journal-title":"Early Hum. Dev."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib5","doi-asserted-by":"crossref","first-page":"12","DOI":"10.1016\/0887-8994(94)90287-9","article-title":"Lower neurodevelopmental performance at 2 years in healthy preterm neonates","volume":"11","author":"Scher","year":"1994","journal-title":"Pediatr. Neurol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib6","doi-asserted-by":"crossref","first-page":"71","DOI":"10.1097\/00004703-199304000-00001","article-title":"Early sleep patterns of premature infants are differentially related to later developmental disabilities","volume":"14","author":"Whitney","year":"1993","journal-title":"J. Dev. Behav. Pediatr."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib7","doi-asserted-by":"crossref","first-page":"360","DOI":"10.1203\/00006450-200009000-00017","article-title":"Factors affecting heart rate variability and heart rate responses to tilting in infants aged 1 and 3 months","volume":"48","author":"Galland","year":"2000","journal-title":"Pediatr. Res."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib8","doi-asserted-by":"crossref","first-page":"307","DOI":"10.1097\/00006199-200309000-00005","article-title":"Development of behaviors in preterm infants: relation to sleeping and waking","volume":"52","author":"Holditch-Davis","year":"2003","journal-title":"Nurs. Res."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib9","doi-asserted-by":"crossref","first-page":"293","DOI":"10.1097\/00006199-199409000-00007","article-title":"Pathologic apnea and brief respiratory pauses in preterm infants: relation to sleep state","volume":"43","author":"Holditch-Davis","year":"1994","journal-title":"Nurs. Res."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib10","doi-asserted-by":"crossref","first-page":"220","DOI":"10.1203\/00006450-200102000-00015","article-title":"Patterns of EEG frequency, movement, heart rate, and oxygenation after isolated short apneas in infants","volume":"49","author":"Vecchierini","year":"2001","journal-title":"Pediatr. Res."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib11","doi-asserted-by":"crossref","first-page":"54","DOI":"10.1152\/jappl.1980.48.1.54","article-title":"Medullary respiratory neuron activity: relationship to tonic and phasic REM sleep","volume":"48","author":"Orem","year":"1980","journal-title":"J. Appl. Physiol: Respir. Environ. Exercise Physiol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib12","first-page":"423","article-title":"Behavioral state as a lead variable in neonatal research","volume":"33","author":"Colombo","year":"1987","journal-title":"Merrill-Palmer Q."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib13","doi-asserted-by":"crossref","first-page":"161","DOI":"10.1046\/j.1365-2648.2002.02358.x","article-title":"Effects of prone and supine positions on sleep state and stress responses in mechanically ventilated preterm infants during the first postnatal week","volume":"40","author":"Chang","year":"2002","journal-title":"J. Adv. Nurs."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib14","doi-asserted-by":"crossref","first-page":"435","DOI":"10.1002\/1098-240X(200012)23:6<435::AID-NUR3>3.0.CO;2-P","article-title":"Physiologic and behavioral effects of gentle human touch on preterm infants","volume":"23","author":"Harrison","year":"2000","journal-title":"Res. Nurs. Health"},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib15","doi-asserted-by":"crossref","first-page":"91","DOI":"10.1017\/S0012162201001736","article-title":"Effect of auditory, tactile, visual, and vestibular intervention on length of stay, alertness, and feeding progression in preterm infants","volume":"44","author":"White-Traut","year":"2002","journal-title":"Dev. Med. Child Neurol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib16","doi-asserted-by":"crossref","first-page":"160","DOI":"10.1159\/000014092","article-title":"Effect of repeated doses of sucrose during heel stick procedure in preterm neonates","volume":"75","author":"Johnston","year":"1999","journal-title":"Biol. Neonate"},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib17","doi-asserted-by":"crossref","first-page":"333","DOI":"10.1016\/0163-6383(88)90018-5","article-title":"Social stimulation and the regulation of premature infants' state prior to term age","volume":"11","author":"Oehler","year":"1988","journal-title":"Infant Behav. Dev."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib18","doi-asserted-by":"crossref","first-page":"513","DOI":"10.1016\/0163-6383(90)90020-9","article-title":"The development of sleeping and waking states in high-risk preterm infants","volume":"13","author":"Holditch-Davis","year":"1990","journal-title":"Infant Behav. Dev."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib19","doi-asserted-by":"crossref","first-page":"319","DOI":"10.1016\/S0031-9384(97)00396-X","article-title":"Modeling development of sleep\u2013wake behaviors: II. Results of 2 cohorts of preterms","volume":"63","author":"Holditch-Davis","year":"1998","journal-title":"Physiol. Behav."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib20","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1111\/1467-8624.00001","article-title":"Sleep\/wake states of preterm infants: stability, developmental change, diurnal variation, and relation with caregiving activity","volume":"70","author":"Ingersoll","year":"1999","journal-title":"Child Dev."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib21","doi-asserted-by":"crossref","first-page":"111","DOI":"10.1016\/S0163-6383(88)80020-1","article-title":"State behavior of preterm infants as a function of development, individual and sex differences","volume":"11","author":"Korner","year":"1988","journal-title":"Infant Behav. Dev."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib22","doi-asserted-by":"crossref","first-page":"12","DOI":"10.1016\/S0387-7604(12)80273-7","article-title":"State profile in low-risk pre-term infants: a longitudinal study of 7 infants from 32\u201336 weeks of postmenstrual age","volume":"14","author":"Vles","year":"1992","journal-title":"Brain Dev."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib23","doi-asserted-by":"crossref","first-page":"484","DOI":"10.1111\/j.1651-2227.1995.tb13679.x","article-title":"Development of sleep\u2013wakefulness rhythm in premature babies","volume":"84","author":"Ardura","year":"1995","journal-title":"Acta Paediatr."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib24","doi-asserted-by":"crossref","first-page":"354","DOI":"10.1055\/s-2008-1071402","article-title":"Sleep states and behavior patterns in preterm and fullterm infants","volume":"11","author":"Booth","year":"1980","journal-title":"Neuropediatrics"},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib25","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1002\/(SICI)1098-2302(199601)29:1<1::AID-DEV1>3.0.CO;2-Y","article-title":"A developmental and component analysis of active sleep","volume":"29","author":"Blumberg","year":"1996","journal-title":"Dev. Psychobiol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib26","doi-asserted-by":"crossref","first-page":"83","DOI":"10.1097\/00004703-199204000-00001","article-title":"Early state organization and follow-up over one year","volume":"13","author":"Fajardo","year":"1992","journal-title":"J. Dev. Behav. Pediatr."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib27","doi-asserted-by":"crossref","first-page":"325","DOI":"10.1016\/0013-4694(90)90033-G","article-title":"Developmental changes in phasic sleep parameters as reflections of the brain-stem maturation: polysomnographical examinations of infants, including premature neonates","volume":"76","author":"Kohyama","year":"1990","journal-title":"Electroencephalogr. Clin. Neurophysiol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib28","doi-asserted-by":"crossref","first-page":"732","DOI":"10.1203\/00006450-199412000-00008","article-title":"Maturation of phasic and continuity measures during sleep in preterm neonates","volume":"36","author":"Scher","year":"1994","journal-title":"Pediatr. Res."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib29","doi-asserted-by":"crossref","first-page":"431","DOI":"10.1002\/dev.420210503","article-title":"Development of sleep states in normal premature and fullterm newborns","volume":"21","author":"Curzi-Dascalova","year":"1988","journal-title":"Dev. Psychobiol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib30","doi-asserted-by":"crossref","first-page":"85","DOI":"10.1002\/dev.420280203","article-title":"Methodological issues in coding sleep states in immature infants","volume":"28","author":"Sahni","year":"1995","journal-title":"Dev. Psychobiol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib31","doi-asserted-by":"crossref","first-page":"314","DOI":"10.1016\/0887-8994(95)00052-H","article-title":"Maturational trends of EEG-sleep measures in the healthy preterm neonate","volume":"12","author":"Scher","year":"1995","journal-title":"Pediatr. Neurol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib32","doi-asserted-by":"crossref","first-page":"133","DOI":"10.1002\/1098-2302(200103)38:2<133::AID-DEV1006>3.0.CO;2-I","article-title":"Activity patterns assessed throughout 24-hour recordings in preterm and near term infants","volume":"38","author":"Giganti","year":"2001","journal-title":"Dev. Psychobiol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib33","doi-asserted-by":"crossref","first-page":"279","DOI":"10.1002\/dev.420260505","article-title":"Spontaneous motility in premature infants: features of behavioral activity and rhythmic organization","volume":"26","author":"Hayes","year":"1992","journal-title":"Dev. Psychobiol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib34","doi-asserted-by":"crossref","first-page":"25","DOI":"10.1002\/dev.420200107","article-title":"Behavioral states of premature infants: implications for neural and behavioral development","volume":"20","author":"Holditch Davis","year":"1987","journal-title":"Dev. Psychobiol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib35","doi-asserted-by":"crossref","first-page":"223","DOI":"10.1016\/0163-6383(94)90001-9","article-title":"Sleep in premature and fullterm infants from 24-hour home recordings","volume":"17","author":"Whitney","year":"1994","journal-title":"Infant Behav. Dev."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib36","doi-asserted-by":"crossref","first-page":"151","DOI":"10.1002\/dev.420180207","article-title":"The organization and stability of sleep states in fullterm, preterm, and small-for-gestational-age infants: a comparative study","volume":"18","author":"Watt","year":"1985","journal-title":"Dev. Psychobiol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib37","doi-asserted-by":"crossref","first-page":"165","DOI":"10.1016\/0013-4694(80)90333-8","article-title":"Development of EEG and daytime sleep patterns in low risk premature infants during the first year of life: longitudinal observations","volume":"50","author":"Ellingson","year":"1980","journal-title":"Electroencephalogr. Clin. Neurophysiol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib38","doi-asserted-by":"crossref","first-page":"70","DOI":"10.1111\/j.1469-8749.1967.tb02212.x","article-title":"Sleep states in premature infants","volume":"9","author":"Parmelee","year":"1967","journal-title":"Dev. Med. Child Neurol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib39","doi-asserted-by":"crossref","first-page":"624","DOI":"10.1203\/00006450-199311000-00013","article-title":"Sleep state organization in premature infants of less than 35 weeks' gestational age","volume":"34","author":"Curzi-Dascalova","year":"1993","journal-title":"Pediatr. Res."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib40","doi-asserted-by":"crossref","first-page":"785","DOI":"10.1093\/jpepsy\/21.6.785","article-title":"Behavioral sleep states in very low birth weight preterm neonates: relation to neonatal health and vagal maturation","volume":"21","author":"Doussard-Roosevelt","year":"1996","journal-title":"J. Pediatr. Psychol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib41","series-title":"Key aspects of caring for the chronically ill: hospital and home","first-page":"250","article-title":"The behaviors and nursing care of preterm infants with chronic lung disease","author":"Holditch-Davis","year":"1993"},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib42","doi-asserted-by":"crossref","first-page":"744","DOI":"10.1037\/0012-1649.18.5.744","article-title":"Early influences of prematurity, illness, and prolonged hospitalization on infant behavior","volume":"18","author":"Holmes","year":"1982","journal-title":"Dev. Psychol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib43","doi-asserted-by":"crossref","first-page":"518","DOI":"10.1002\/ana.410060610","article-title":"Central nervous system maturation in the stressed premature","volume":"6","author":"Holmes","year":"1979","journal-title":"Ann. Neurol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib44","doi-asserted-by":"crossref","first-page":"195","DOI":"10.1093\/sleep\/15.3.195","article-title":"Sleep architecture and continuity measures in neonates with chronic lung disease","volume":"15","author":"Scher","year":"1992","journal-title":"Sleep"},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib45","doi-asserted-by":"crossref","first-page":"27","DOI":"10.1016\/0163-6383(92)90004-P","article-title":"Prematurity and respiratory illness: Brazelton Scale (NBAS) performance of preterm infants with bronchopulmonary displasia (BPD), respiratory distress syndrome (RDS), or no respiratory illness","volume":"15","author":"Myers","year":"1992","journal-title":"Infant Behav. Dev."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib46","doi-asserted-by":"crossref","first-page":"884","DOI":"10.1542\/peds.110.5.884","article-title":"Effect of supplemental oxygen on sleep architecture and cardiorespiratory events in preterm infants","volume":"110","author":"Simakajornboon","year":"2002","journal-title":"Pediatrics"},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib47","doi-asserted-by":"crossref","first-page":"766","DOI":"10.1067\/mpd.2002.124383","article-title":"Sleep organization is unaffected by caffeine in premature infants","volume":"140","author":"Curzi-Dascalova","year":"2002","journal-title":"J. Pediatr."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib48","doi-asserted-by":"crossref","first-page":"1123","DOI":"10.1542\/peds.78.6.1123","article-title":"Individualized behavioral and environmental care for the very low birth weight preterm infant at high risk for bronchopulmonary dysplasia: neonatal intensive care unit and developmental outcome","volume":"78","author":"Als","year":"1986","journal-title":"Pediatrics"},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib49","doi-asserted-by":"crossref","first-page":"769","DOI":"10.1016\/S0022-3476(79)80734-9","article-title":"A simplified score for assessment of fetal maturation of newly born infants","volume":"95","author":"Ballard","year":"1979","journal-title":"J. Pediatr."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib50","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/S0022-3476(70)80038-5","article-title":"Clinical assessment of gestational age in the newborn infant","volume":"77","author":"Dubowitz","year":"1970","journal-title":"J. Pediatr."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib51","doi-asserted-by":"crossref","first-page":"13","DOI":"10.1055\/s-2008-1052537","article-title":"Theophylline affects sleep\u2013wake state development in premature infants","volume":"16","author":"Thoman","year":"1985","journal-title":"Neuropediatrics"},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib52","doi-asserted-by":"crossref","first-page":"375","DOI":"10.1097\/00004703-199312010-00003","article-title":"Nursery neurobiologic risk score: levels of risk and relationships with nonmedical factors","volume":"14","author":"Brazy","year":"1993","journal-title":"J. Dev. Behav. Pediatr."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib53","doi-asserted-by":"crossref","first-page":"330","DOI":"10.1002\/1099-0496(200010)30:4<330::AID-PPUL10>3.0.CO;2-D","article-title":"Modern statistical techniques for the analysis of longitudinal data in biomedical research","volume":"30","author":"Edwards","year":"2000","journal-title":"Pediatr. Pulmonol."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib54","doi-asserted-by":"crossref","first-page":"1185","DOI":"10.1111\/j.0006-341X.2001.01185.x","article-title":"Linear equality constraints in the general linear mixed model","volume":"57","author":"Edwards","year":"2001","journal-title":"Biometrics"},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib55","doi-asserted-by":"crossref","first-page":"205","DOI":"10.1080\/00949658608810933","article-title":"A mixed linear model with linear covariance structure: a sensitivity analysis of the maximum likelihood estimators","volume":"25","author":"Fairclough","year":"1986","journal-title":"J. Stat. Comput. Simul."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib56","doi-asserted-by":"crossref","first-page":"311","DOI":"10.1016\/S0031-9384(97)00459-9","article-title":"Modeling development of sleep\u2013wake behaviors: I. Using the mixed general linear model","volume":"63","author":"Holditch-Davis","year":"1998","journal-title":"Physiol. Behav."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib57","doi-asserted-by":"crossref","first-page":"805","DOI":"10.2307\/2530695","article-title":"Unbalanced repeated-measures models with structured covariance matrices","volume":"42","author":"Jennrich","year":"1986","journal-title":"Biometrics"},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib58","doi-asserted-by":"crossref","first-page":"968","DOI":"10.2307\/2529876","article-title":"Random-effects models for longitudinal data","volume":"38","author":"Laird","year":"1982","journal-title":"Biometrics"},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib59","series-title":"Regression and ANOVA: an integrated approach using the SAS software","author":"Muller","year":"2002"},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib60","series-title":"SAS system for regression","author":"Freund","year":"2000"},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib61","doi-asserted-by":"crossref","first-page":"e9","DOI":"10.1542\/peds.100.6.e9","article-title":"Developmental care does not alter sleep and development of premature infants","volume":"110","author":"Ariagno","year":"1997","journal-title":"Pediatrics"},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib62","doi-asserted-by":"crossref","first-page":"318","DOI":"10.1111\/j.1651-2227.2002.tb01722.x","article-title":"No indication of increased quiet sleep in infants receiving care based on the Newborn Individualized Developmental Care and Assessment Program (NIDCAP)","volume":"91","author":"Westrup","year":"2002","journal-title":"Acta Paediatr."},{"key":"10.1016\/j.earlhumdev.2004.05.006_bib63","doi-asserted-by":"crossref","first-page":"257","DOI":"10.1002\/(SICI)1098-2302(199811)33:3<257::AID-DEV6>3.0.CO;2-Q","article-title":"Temporal organization of sleep\u2013wake states in preterm infants","volume":"33","author":"Holditch-Davis","year":"1998","journal-title":"Dev. Psychobiol."}],"container-title":["Early Human Development"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0378378204000817?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0378378204000817?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2023,4,29]],"date-time":"2023-04-29T03:37:33Z","timestamp":1682739453000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0378378204000817"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2004,10]]},"references-count":63,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2004,10]]}},"alternative-id":["S0378378204000817"],"URL":"https:\/\/doi.org\/10.1016\/j.earlhumdev.2004.05.006","relation":{},"ISSN":["0378-3782"],"issn-type":[{"value":"0378-3782","type":"print"}],"subject":[],"published":{"date-parts":[[2004,10]]}}}