Japanese experience with the Margulies spiral and the Lippes loop.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001706:Biopsy; D004717:Endometrium / Q000473:pathology; D005260:Female; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects / Q000706:statistics & numerical data*; D007564:Japan; D011247:Pregnancy; D013997:Time Factors