[Clinical efficacy of intrauterine contraceptive devices of the loop type].
D000293:Adolescent; D000328:Adult; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D011247:Pregnancy; D013997:Time Factors
Klinicheskaia effektivnost' vnutrimatochnykh kontratseptivov tipa  petlia".