The Dalkon Shield in nulliparous women.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D004412:Dysmenorrhea / Q000209:etiology; D005260:Female; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects; D008598:Menstruation; D008796:Metrorrhagia / Q000209:etiology; D010298:Parity; D011247:Pregnancy; D011446:Prospective Studies