题名 | Oral contraceptive pills as primary prevention for ovarian cancer: a systematic review and meta-analysis. |
杂志 | Obstet Gynecol. |
年|卷|期 | 2013 Jul;122(1): |
页码 | 139-47 |
链接 | http://www.ncbi.nlm.nih.gov/pubmed/23743450 |
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