负压吸宫术前口服和阴道放置米索前列醇及米非司酮对宫颈扩张作用的比较
부압흡궁술전구복화음도방치미색전렬순급미비사동대궁경확장작용적비교
A randomized Comparison of Misoprostol and Mifepristone Taken Orally and Put into Vagina in Cervical Dilatation before Vacuum Extraction
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