The crucial role of definition in perinatal epidemiology.
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Klinik für Neonatologie, Universitätsspital, Zürich.
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