Breast-feeding: its effects on post-partum amenorrhea.
D000293:Adolescent; D000328:Adult; D000568:Amenorrhea / Q000209:etiology*; D001942:Breast Feeding; D005260:Female; D006801:Humans; D007194:India; D007226:Infant Mortality; D007774:Lactation; D011247:Pregnancy; D011644:Puerperal Disorders / Q000209:etiology*