title: [The survival of preterm infants].
authors.forename: Thórdur
authors.initials: T
authors.lastname: Thórkelsson
mesh_terms: D002423:Cause of Death; D006801:Humans; D007055:Iceland / Q000453:epidemiology; D007226:Infant Mortality; D007231:Infant, Newborn; D007234:Infant, Premature; D054238:Perinatal Mortality; D018570:Risk Assessment; D012307:Risk Factors; D016019:Survival Analysis