Prolonged breastfeeding as a birth spacing method.
D000413:Alaska; D000568:Amenorrhea / Q000209:etiology; D001942:Breast Feeding; D003267:Contraception; D005193:Family Planning Services; D005260:Female; D005298:Fertility; D006801:Humans; D007194:India; D007434:Intrauterine Devices; D004930:Inuit; D007774:Lactation; D008598:Menstruation; D010060:Ovulation; D011247:Pregnancy; D013997:Time Factors