Studies on intrauterine contraceptive devices. 3. Application of high polymers in cavity of uterus and a new radiopaque phycon-X ring.
D000328:Adult; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D011108:Polymers; D011859:Radiography; D012408:Rubber; D012828:Silicones
D011108:Polymers; D012828:Silicones; D012408:Rubber