{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,30]],"date-time":"2026-10-30T18:33:23Z","timestamp":1793385203019,"version":"4.5.0"},"reference-count":44,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[2026,12,1]],"date-time":"2026-12-01T00:00:00Z","timestamp":1796083200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2026,12,1]],"date-time":"2026-12-01T00:00:00Z","timestamp":1796083200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T00:00:00Z","timestamp":1787702400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003554","name":"Lundbeck Foundation","doi-asserted-by":"publisher","award":["R313-2019-569"],"award-info":[{"award-number":["R313-2019-569"]}],"id":[{"id":"10.13039\/501100003554","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100009708","name":"Novo Nordisk Foundation","doi-asserted-by":"publisher","award":["NNF21OC0072397"],"award-info":[{"award-number":["NNF21OC0072397"]}],"id":[{"id":"10.13039\/501100009708","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100024075","name":"Region of Southern Denmark","doi-asserted-by":"publisher","award":["A5752"],"award-info":[{"award-number":["A5752"]}],"id":[{"id":"10.13039\/501100024075","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100024075","name":"Region of Southern Denmark","doi-asserted-by":"publisher","award":["A1784"],"award-info":[{"award-number":["A1784"]}],"id":[{"id":"10.13039\/501100024075","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Journal of Affective Disorders"],"published-print":{"date-parts":[[2026,12]]},"DOI":"10.1016\/j.jad.2026.122432","type":"journal-article","created":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T15:58:41Z","timestamp":1787759921000},"page":"122432","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":0,"special_numbering":"C","title":["Heritability of postpartum depression in female twin pairs: A Danish population-based cohort study"],"prefix":"10.1016","volume":"414","author":[{"given":"Mette","family":"Bliddal","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sofie","family":"Egsgaard","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carolyn E.","family":"Cesta","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dorthe A.","family":"Pedersen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S\u00f6ren","family":"M\u00f6ller","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kaare","family":"Christensen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Trine","family":"Munk-Olsen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.jad.2026.122432_bb0005","doi-asserted-by":"crossref","first-page":"83","DOI":"10.1016\/j.jad.2015.12.005","article-title":"Lifetime costs of perinatal anxiety and depression","volume":"192","author":"Bauer","year":"2016","journal-title":"J. Affect. Disord."},{"key":"10.1016\/j.jad.2026.122432_bb0010","doi-asserted-by":"crossref","first-page":"288","DOI":"10.1038\/s41398-019-0629-9","article-title":"Genetic risk scores for major psychiatric disorders and the risk of postpartum psychiatric disorders","volume":"9","author":"Bauer","year":"2019","journal-title":"Transl. Psychiatry"},{"key":"10.1016\/j.jad.2026.122432_bb0015","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1017\/S003329171000084X","article-title":"Psychiatric \u201cdiseases\u201d versus behavioral disorders and degree of genetic influence","volume":"41","author":"Bienvenu","year":"2011","journal-title":"Psychol. Med."},{"key":"10.1016\/j.jad.2026.122432_bb0020","doi-asserted-by":"crossref","first-page":"27","DOI":"10.1007\/s10654-018-0356-1","article-title":"The Danish Medical Birth Register","volume":"33","author":"Bliddal","year":"2018","journal-title":"Eur. J. Epidemiol."},{"key":"10.1016\/j.jad.2026.122432_bb0025","doi-asserted-by":"crossref","first-page":"519","DOI":"10.1007\/s00737-014-0428-5","article-title":"Applying polygenic risk scores to postpartum depression","volume":"17","author":"Byrne","year":"2014","journal-title":"Arch. Womens Ment. Health"},{"key":"10.1016\/j.jad.2026.122432_bb0030","doi-asserted-by":"crossref","first-page":"67","DOI":"10.1080\/02646838.2020.1754372","article-title":"Shame and guilt in the postnatal period: a systematic review","volume":"39","author":"Caldwell","year":"2021","journal-title":"J. Reprod. Infant Psychol."},{"key":"10.1016\/j.jad.2026.122432_bb0035","doi-asserted-by":"crossref","first-page":"275","DOI":"10.1375\/136905203322296610","article-title":"Age- and sex-differences in the validity of questionnaire-based zygosity in twins","volume":"6","author":"Christiansen","year":"2003","journal-title":"Twin Res."},{"key":"10.1016\/j.jad.2026.122432_bb0040","doi-asserted-by":"crossref","DOI":"10.1016\/j.neubiorev.2024.105579","article-title":"Perinatal depression and infant and toddler neurodevelopment: a systematic review and meta-analysis","volume":"159","author":"Fan","year":"2024","journal-title":"Neurosci. Biobehav. Rev."},{"key":"10.1016\/j.jad.2026.122432_bb0045","doi-asserted-by":"crossref","first-page":"461","DOI":"10.1016\/S2215-0366(26)00085-4","article-title":"The global prevalence of major depressive disorder during the peripartum period: a systematic review and meta-regression","volume":"13","author":"Ferrari","year":"2026","journal-title":"Lancet Psychiatry"},{"key":"10.1016\/j.jad.2026.122432_bb0050","doi-asserted-by":"crossref","first-page":"265","DOI":"10.1016\/j.jad.2014.10.016","article-title":"The influence of genetic factors on peripartum depression: a systematic review","volume":"172","author":"Figueiredo","year":"2015","journal-title":"J. Affect. Disord."},{"key":"10.1016\/j.jad.2026.122432_bb0055","doi-asserted-by":"crossref","first-page":"884","DOI":"10.1176\/appi.ajp.20230053","article-title":"Meta-analyses of genome-wide association studies for postpartum depression","volume":"180","author":"Guintivano","year":"2023","journal-title":"Am. J. Psychiatry"},{"key":"10.1016\/j.jad.2026.122432_bb0060","article-title":"Economic and health predictors of national postpartum depression prevalence: a systematic review, meta-analysis, and meta-regression of 291 studies from 56 countries","volume":"8","author":"Hahn-Holbrook","year":"2017","journal-title":"Front. Psychol."},{"key":"10.1016\/j.jad.2026.122432_bb0065","doi-asserted-by":"crossref","first-page":"492","DOI":"10.1016\/j.biopsych.2017.08.017","article-title":"Heritability of schizophrenia and schizophrenia spectrum based on the nationwide Danish twin register","volume":"83","author":"Hilker","year":"2018","journal-title":"Biol. Psychiatry"},{"key":"10.1016\/j.jad.2026.122432_bb0070","doi-asserted-by":"crossref","DOI":"10.3390\/genes10020166","article-title":"Lifespans of twins: does zygosity matter?","volume":"10","author":"Hjelmborg","year":"2019","journal-title":"Genes (Basel)"},{"key":"10.1016\/j.jad.2026.122432_bb0075","doi-asserted-by":"crossref","first-page":"1775","DOI":"10.1016\/S0140-6736(14)61276-9","article-title":"Non-psychotic mental disorders in the perinatal period","volume":"384","author":"Howard","year":"2014","journal-title":"Lancet"},{"key":"10.1016\/j.jad.2026.122432_bb0080","doi-asserted-by":"crossref","first-page":"427","DOI":"10.1017\/thg.2019.121","article-title":"Twin family registries worldwide: an important resource for scientific research","volume":"22","author":"Hur","year":"2019","journal-title":"Twin Res. Hum. Genet."},{"key":"10.1016\/j.jad.2026.122432_bb0085","doi-asserted-by":"crossref","DOI":"10.4088\/JCP.20m13555","article-title":"Divorce or separation following postpartum psychiatric episodes: a population-based cohort study","volume":"82","author":"Johannsen","year":"2021","journal-title":"J. Clin. Psychiatry"},{"key":"10.1016\/j.jad.2026.122432_bb0090","doi-asserted-by":"crossref","first-page":"182","DOI":"10.1002\/da.23232","article-title":"Perinatal depression is associated with a higher polygenic risk for major depressive disorder than non-perinatal depression","volume":"39","author":"Kiewa","year":"2022","journal-title":"Depress. Anxiety"},{"key":"10.1016\/j.jad.2026.122432_bb0095","doi-asserted-by":"crossref","DOI":"10.1002\/pds.4953","article-title":"Treatment indications for antidepressants prescribed to pregnant women: a population-based descriptive study from Denmark","volume":"29","author":"Liu","year":"2020","journal-title":"Pharmacoepidemiol. Drug Saf."},{"key":"10.1016\/j.jad.2026.122432_bb0100","doi-asserted-by":"crossref","first-page":"171","DOI":"10.1093\/schbul\/18.2.171","article-title":"When assessing twin concordance, use the probandwise not the pairwise rate","volume":"18","author":"McGue","year":"1992","journal-title":"Schizophr. Bull."},{"key":"10.1016\/j.jad.2026.122432_bb0105","doi-asserted-by":"crossref","first-page":"497","DOI":"10.1001\/archpsyc.60.5.497","article-title":"The heritability of bipolar affective disorder and the genetic relationship to unipolar depression","volume":"60","author":"McGuffin","year":"2003","journal-title":"Arch. Gen. Psychiatry"},{"key":"10.1016\/j.jad.2026.122432_bb0110","doi-asserted-by":"crossref","DOI":"10.1038\/nrdp.2018.22","article-title":"Postpartum psychiatric disorders","volume":"4","author":"Meltzer-Brody","year":"2018","journal-title":"Nat. Rev. Dis. Primers"},{"key":"10.1016\/j.jad.2026.122432_bb0115","doi-asserted-by":"crossref","first-page":"54","DOI":"10.1177\/1403494810395825","article-title":"The Danish Psychiatric Central Research Register","volume":"39","author":"Mors","year":"2011","journal-title":"Scand. J. Public Health"},{"key":"10.1016\/j.jad.2026.122432_bb0120","doi-asserted-by":"crossref","first-page":"346","DOI":"10.1038\/s41398-023-02649-2","article-title":"Postpartum and non-postpartum depression: a population-based matched case-control study comparing polygenic risk scores for severe mental disorders","volume":"13","author":"Munk-Olsen","year":"2023","journal-title":"Transl. Psychiatry"},{"key":"10.1016\/j.jad.2026.122432_bb0125","doi-asserted-by":"crossref","first-page":"631","DOI":"10.1038\/d41586-019-03226-8","article-title":"Prevent depression in pregnancy to boost all mental health","volume":"574","author":"Mu\u00f1oz","year":"2019","journal-title":"Nature"},{"key":"10.1016\/j.jad.2026.122432_bb0130","series-title":"Methodology for Genetic Studies of Twins and Families","author":"Neale","year":"2013"},{"key":"10.1016\/j.jad.2026.122432_bb0135","doi-asserted-by":"crossref","first-page":"573","DOI":"10.1001\/jamapsychiatry.2014.16","article-title":"A comprehensive nationwide study of the incidence rate and lifetime risk for treated mental disorders","volume":"71","author":"Pedersen","year":"2014","journal-title":"JAMA Psychiatry"},{"key":"10.1016\/j.jad.2026.122432_bb0140","doi-asserted-by":"crossref","first-page":"499","DOI":"10.1017\/thg.2019.72","article-title":"The Danish Twin Registry: an updated overview","volume":"22","author":"Pedersen","year":"2019","journal-title":"Twin Res. Hum. Genet."},{"key":"10.1016\/j.jad.2026.122432_bb0145","article-title":"Data resource profile: the Danish National Prescription Registry","volume":"46","author":"Potteg\u00e5rd","year":"2017","journal-title":"Int. J. Epidemiol."},{"key":"10.1016\/j.jad.2026.122432_bb0150","doi-asserted-by":"crossref","first-page":"3292","DOI":"10.1038\/s41380-019-0559-1","article-title":"A major role for common genetic variation in anxiety disorders","volume":"25","author":"Purves","year":"2020","journal-title":"Mol. Psychiatry"},{"key":"10.1016\/j.jad.2026.122432_bb0155","doi-asserted-by":"crossref","DOI":"10.1371\/journal.pmed.1002392","article-title":"Risk, treatment duration, and recurrence risk of postpartum affective disorder in women with no prior psychiatric history: a population-based cohort study","volume":"14","author":"Rasmussen","year":"2017","journal-title":"PLoS Med."},{"key":"10.1016\/j.jad.2026.122432_bb0160","doi-asserted-by":"crossref","first-page":"305","DOI":"10.1016\/j.jad.2023.04.135","article-title":"Kind of blue - an evaluation of etiologies for prenatal versus postnatal depression symptoms","volume":"335","author":"Samuelsen","year":"2023","journal-title":"J. Affect. Disord."},{"key":"10.1016\/j.jad.2026.122432_bb0165","doi-asserted-by":"crossref","first-page":"449","DOI":"10.2147\/CLEP.S91125","article-title":"The Danish National Patient Registry: a review of content, data quality, and research potential","volume":"7","author":"Schmidt","year":"2015","journal-title":"Clin. Epidemiol."},{"key":"10.1016\/j.jad.2026.122432_bb0170","doi-asserted-by":"crossref","first-page":"380","DOI":"10.1001\/jama.2015.18392","article-title":"Screening for depression in adults: US preventive services task force recommendation statement","volume":"315","author":"Siu","year":"2016","journal-title":"JAMA"},{"key":"10.1016\/j.jad.2026.122432_bb0175","doi-asserted-by":"crossref","first-page":"1246","DOI":"10.1001\/jamapsychiatry.2024.2406","article-title":"Polygenic risk scores and twin concordance for schizophrenia and bipolar disorder","volume":"81","author":"Song","year":"2024","journal-title":"JAMA Psychiatry"},{"key":"10.1016\/j.jad.2026.122432_bb0180","doi-asserted-by":"crossref","first-page":"1552","DOI":"10.1176\/appi.ajp.157.10.1552","article-title":"Genetic epidemiology of major depression: review and meta-analysis","volume":"157","author":"Sullivan","year":"2000","journal-title":"Am. J. Psychiatry"},{"key":"10.1016\/j.jad.2026.122432_bb0185","doi-asserted-by":"crossref","first-page":"12","DOI":"10.1177\/1403494811399956","article-title":"Introduction to Danish (nationwide) registers on health and social issues: structure, access, legislation, and archiving","volume":"39","author":"Thygesen","year":"2011","journal-title":"Scand. J. Public Health"},{"key":"10.1016\/j.jad.2026.122432_bb0190","doi-asserted-by":"crossref","first-page":"645","DOI":"10.1017\/S0033291799008387","article-title":"Genetic influences on post-natal depressive symptoms: findings from an Australian twin sample","volume":"29","author":"Treloar","year":"1999","journal-title":"Psychol. Med."},{"key":"10.1016\/j.jad.2026.122432_bb0195","doi-asserted-by":"crossref","first-page":"580","DOI":"10.1001\/jama.2019.0007","article-title":"Interventions to prevent perinatal depression: US Preventive Services Task Force Recommendation Statement","volume":"321","author":"US Preventive Services Task Force","year":"2019","journal-title":"JAMA"},{"key":"10.1016\/j.jad.2026.122432_bb0200","doi-asserted-by":"crossref","first-page":"158","DOI":"10.1016\/j.jad.2021.02.062","article-title":"Postpartum depression and anxiety: a community-based study on risk factors before, during and after pregnancy","volume":"286","author":"van der Zee-van den Berg","year":"2021","journal-title":"J. Affect. Disord."},{"key":"10.1016\/j.jad.2026.122432_bb0205","doi-asserted-by":"crossref","first-page":"640","DOI":"10.1038\/nrg3243","article-title":"The continuing value of twin studies in the omics era","volume":"13","author":"van Dongen","year":"2012","journal-title":"Nat. Rev. Genet."},{"key":"10.1016\/j.jad.2026.122432_bb0210","doi-asserted-by":"crossref","first-page":"158","DOI":"10.1176\/appi.ajp.2015.15010085","article-title":"Heritability of perinatal depression and genetic overlap with nonperinatal depression","volume":"173","author":"Viktorin","year":"2016","journal-title":"Am. J. Psychiatry"},{"key":"10.1016\/j.jad.2026.122432_bb0220","doi-asserted-by":"crossref","first-page":"86","DOI":"10.1016\/j.jad.2017.05.003","article-title":"A systematic review and meta-regression of the prevalence and incidence of perinatal depression","volume":"219","author":"Woody","year":"2017","journal-title":"J. Affect. Disord."},{"key":"10.1016\/j.jad.2026.122432_bb0225","doi-asserted-by":"crossref","first-page":"1004","DOI":"10.1001\/jamapsychiatry.2022.2400","article-title":"Family history of psychiatric disorders as a risk factor for maternal postpartum depression: a systematic review and meta-analysis","volume":"79","author":"Zacher Kjeldsen","year":"2022","journal-title":"JAMA Psychiatry"}],"container-title":["Journal of Affective Disorders"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0165032726012851?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0165032726012851?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2026,10,30]],"date-time":"2026-10-30T18:04:10Z","timestamp":1793383450000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0165032726012851"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,12]]},"references-count":44,"alternative-id":["S0165032726012851"],"URL":"https:\/\/doi.org\/10.1016\/j.jad.2026.122432","relation":{},"ISSN":["0165-0327"],"issn-type":[{"value":"0165-0327","type":"print"}],"subject":[],"published":{"date-parts":[[2026,12]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Heritability of postpartum depression in female twin pairs: A Danish population-based cohort study","name":"articletitle","label":"Article Title"},{"value":"Journal of Affective Disorders","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.jad.2026.122432","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2026 The Authors. Published by Elsevier B.V.","name":"copyright","label":"Copyright"}],"article-number":"122432"}}