An epidemiologic study of factors related to the extent of facial clefts.
D001719:Birth Certificates; D001724:Birth Weight; D002972:Cleft Palate / Q000453:epidemiology* / Q000209:etiology; D005260:Female; D006801:Humans; D008423:Maternal Age; D012907:Smoking; D011795:Surveys and Questionnaires