改良YZ-Ⅱ输卵管银夹与原夹绝育效果前瞻性多中心研究
개량YZ-Ⅱ수란관은협여원협절육효과전첨성다중심연구
A Prospective Multicenter Compared Study on the Use - effectiveness between Modified YZ - ⅡTubal Silver Clip and the Original one
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