上海市两社区初婚已分娩夫妇人工流产后开始选用避孕措施状态及影响因素的分析
상해시량사구초혼이분면부부인공유산후개시선용피잉조시상태급영향인소적분석
Analysis of starting adoption of contraceptive method only after induced abortion among women after first birth and its determinants in Shanghai municipality
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