title: Does intensive perinatal care improve the outcome of extreme prematurity? Addressing the methodologic issues.
authors.forename: J E
authors.initials: JE
authors.lastname: Tyson
mesh_terms: D003657:Decision Making; D006801:Humans; D007226:Infant Mortality; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D007234:Infant, Premature; D015931:Intensive Care, Neonatal / Q000592:standards* / Q000706:statistics & numerical data; D011788:Quality of Life; D016896:Treatment Outcome