The frequency of twinning in a rural community in Western Nigeria.
D044383:Black People; D036861:Delivery, Obstetric; D005260:Female; D005306:Fertilization; D005826:Genetics, Medical; D006760:Hospitalization; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D009549:Nigeria; D010063:Ovum; D011247:Pregnancy; D012424:Rural Population; D013223:Statistics as Topic; D014427:Twins