[Comparative study of intrauterine contraception using different ways of inserting the Lippes D. loop].
D000328:Adult; D002677:Chile; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D011247:Pregnancy
Anticoncepción intrauterina con asa de Lippes D. estudio comparativo con diferentes modalidades de inserción.