The demographic evidence for the incidence and cause of abnormally low fertility in tropical Africa.
D000293:Adolescent; D000328:Adult; D000350:Africa, Central; D000354:Africa, Western; D001723:Birth Rate; D002648:Child; D004493:Education; D005006:Ethnicity; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007247:Infertility, Female / Q000453:epidemiology* / Q000209:etiology; D008297:Male; D008875:Middle Aged; D010298:Parity; D011247:Pregnancy; D012746:Sexual Abstinence; D012749:Sexually Transmitted Diseases / Q000150:complications