title: Extremely low birthweight infants in Switzerland: a database of the Swiss neonatology group.
authors.affiliation: Klinik für Neonatologie, Universitätsspital Zürich.
authors.forename: H U
authors.initials: HU
authors.lastname: Bucher
mesh_terms: D006801:Humans; D007223:Infant; D007226:Infant Mortality; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000453:epidemiology; D017063:Outcome Assessment, Health Care; D011446:Prospective Studies; D013557:Switzerland / Q000453:epidemiology