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    Contraceptive Use and the Risk of Ectopic Pregnancy: A Multi-Center Case-Control Study.

    Contraceptive Use and the Risk of Ectopic Pregnancy: A Multi-Center Case-Control Study. by Cheng Li, Wei-Hong Zhao, Chun-Xia Meng, Hua Ping, Guo-Juan Qin, Shu-Jun Cao, Xiaowei Xi, Qian Zhu, Xiao-Cui Li, Jian Zhang

    Published 2014-01-01
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    Article

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