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Journal
Acta Obstet Gynecol Scand
Volume
90
Issue
4
Pages
332-7
Publication year
2011
Suggested citation
Han W, Song J, Liu A, Huo K, Xu F, Cui S, Wang X, Zhu C. Trends in live births in the past 20 years in Zhengzhou, China. Acta Obstet Gynecol Scand. 2011; 90(4): 332-7.