Prevalence of Abandoning High-efficiency Contraception Measures First Used after Induced Abortion in Women with Unintended Pregnancy：an Investigation　
DING Jun，WU Qing，YE Huiqin，YAO Xueping，LYU Liqing，CHENG Xianying
Chinese General Practice . 2021, (27): 3408 -3412 .  DOI: 10.12114/j.issn.1007-9572.2021.00.585

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