绝经后妇女宫内节育器取出术前应用尼尔雌醇扩张宫颈的临床评价
절경후부녀궁내절육기취출술전응용니이자순확장궁경적림상평개
Clinical study on the efficacy of nylestriol for cervical dilatation before removing IUD among postmenopausal women
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