title: Perinatal mortality surveys in an African teaching hospital: I. The past and present statistics.
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006784:Hospitals, Teaching; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D008423:Maternal Age; D009549:Nigeria; D011247:Pregnancy; D011295:Prenatal Care; D011446:Prospective Studies