Maintenance of high sickling rate in Africa--role of polygamy.
D000349:Africa; D000755:Anemia, Sickle Cell / Q000453:epidemiology / Q000209:etiology / Q000235:genetics*; D005260:Female; D005298:Fertility; D006801:Humans; D008288:Malaria / Q000150:complications; D008297:Male; D008393:Marriage; D010963:Plasmodium falciparum; D011110:Polymorphism, Genetic; D011247:Pregnancy