Demographic and endocrinological aspects of low natural fertility in Highland New Guinea.
D000293:Adolescent; D000328:Adult; D000568:Amenorrhea; D001721:Birth Intervals; D002648:Child; D005260:Female; D005298:Fertility; D006801:Humans; D008393:Marriage; D008423:Maternal Age; D008572:Menarche; D008593:Menopause; D008875:Middle Aged; D010219:Papua New Guinea; D049590:Postpartum Period; D011247:Pregnancy