Epidemiologic studies on congenital malformations. Critical review and new conceptions.
D000328:Adult; D000013:Congenital Abnormalities / Q000453:epidemiology* / Q000209:etiology; D006801:Humans; D007231:Infant, Newborn; D011044:Poland; D011446:Prospective Studies; D011996:Records; D012189:Retrospective Studies