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γ活性与常用闭合型活性宫内节育器比较的meta分析
丛捷,王琨,邹燕,吴尚纯,王晨
A meta-analysis of active γ-IUD and other common closed-model IUDs
Cong Jie, Wang Kun, Zou Yan, Wu Shangchun, Wang Chen
中国计划生育学杂志 . 2012, (6): 371 .  DOI: 10.3969/j.issn.1004-8189.2012.06