Natural history of contraceptive practice among postpartum loop acceptors.
D000293:Adolescent; D000328:Adult; D005191:Family Characteristics; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects; D008875:Middle Aged; D010298:Parity; D011155:Population Control; D011247:Pregnancy; D013997:Time Factors; D014481:United States