Survey of childbearing women in Qi-yi Commune.
D000293:Adolescent; D000328:Adult; D002681:China; D004812:Epidemiologic Methods; D005193:Family Planning Services / Q000639:trends*; D005260:Female; D005298:Fertility; D006801:Humans; D008297:Male; D011247:Pregnancy; D013997:Time Factors