Trends in primary and secondary infertility prevalence since 1990: a systematic analysis of demographic and reproductive health surveysMaya Mascarenhas,Seth R Flaxman,Ties Boerma,Sheryl Vanderpoel,Colin D Mathers,Gretchen A StevensThe Lancet(2013)引用 13|浏览14暂无评分AI 理解论文溯源树样例生成溯源树,研究论文发展脉络