title: The crucial role of definition in perinatal epidemiology.
authors.affiliation: Klinik für Neonatologie, Universitätsspital, Zürich.
authors.forename: G
authors.initials: G
authors.lastname: Duc
mesh_terms: D004812:Epidemiologic Methods; D005313:Fetal Death / Q000453:epidemiology; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D018743:Perinatal Care / Q000592:standards; D010500:Perinatology; D013557:Switzerland / Q000453:epidemiology; D009626:Terminology as Topic