Editorial: Considerations on the definition of viability.
D000028:Abortion, Induced; D001290:Attitude; D001724:Birth Weight; D005260:Female; D005333:Fetus; D005865:Gestational Age; D006801:Humans; D007224:Infant Care; D007226:Infant Mortality; D007231:Infant, Newborn; D007362:Intensive Care Units; D011247:Pregnancy