title: Registry based perinatal research.
authors.forename: P
authors.initials: P
authors.lastname: Bergsjø
authors.forename: L M
authors.initials: LM
authors.lastname: Irgens
authors.forename: R T
authors.initials: RT
authors.lastname: Lie
mesh_terms: D000886:Anthropometry; D001723:Birth Rate; D002908:Chronic Disease; D003625:Data Collection; D005260:Female; D006801:Humans; D007229:Infant Welfare; D007231:Infant, Newborn; D011159:Population Surveillance; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology; D012042:Registries; D012107:Research Design