title: [Extremely premature infants--a registry study].
authors.forename: H
authors.initials: H
authors.lastname: Bille
authors.forename: K
authors.initials: K
authors.lastname: Rostgaard
authors.forename: G
authors.initials: G
authors.lastname: Schiøler
mesh_terms: D002648:Child; D002675:Child, Preschool; D003718:Denmark / Q000453:epidemiology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007234:Infant, Premature / Q000502:physiology / Q000523:psychology; D007235:Infant, Premature, Diseases / Q000175:diagnosis / Q000453:epidemiology*; D011379:Prognosis; D012042:Registries
vernacular_title: Ekstremt tidligt fødte børn--en registerundersøgelse.