The epidemiology of anencephaly and spina bifida in Izmir, Turkey, in the light of recent aetiological theories.
D000757:Anencephaly / Q000453:epidemiology* / Q000209:etiology; D004032:Diet / Q000009:adverse effects; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D012621:Seasons; D016136:Spina Bifida Occulta / Q000453:epidemiology* / Q000209:etiology; D014421:Turkey; D014427:Twins; D014675:Vegetables / Q000009:adverse effects; D014881:Water Supply