Anencephaly and spina bifida in the Province of Quebec.
D000757:Anencephaly / Q000453:epidemiology* / Q000209:etiology / Q000235:genetics; D001722:Birth Order; D004200:Diseases in Twins / Q000453:epidemiology; D005006:Ethnicity; D005260:Female; D005313:Fetal Death / Q000209:etiology; D005843:Geography; D006801:Humans; D007226:Infant Mortality; D007585:Jews; D008297:Male; D008423:Maternal Age; D010298:Parity; D011247:Pregnancy; D011792:Quebec; D012424:Rural Population; D012621:Seasons; D012959:Socioeconomic Factors; D016135:Spinal Dysraphism / Q000453:epidemiology* / Q000209:etiology / Q000235:genetics; D014505:Urban Population