Field study of an oral contraceptive among IUD drop-outs in rural Korea.
D000328:Adult; D001294:Attitude to Health; D003276:Contraceptives, Oral; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D007723:Korea; D011247:Pregnancy; D012424:Rural Population
D003276:Contraceptives, Oral