Improved Fecundity in Northern China: A Secular Trend from 1980 to 2003
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چکیده
منابع مشابه
Improved Fecundity in Northern China: A Secular Trend from 1980 to 2003
OBJECTIVE This study aimed to assess the trend of human fecundity over time in China. METHODS This retrospective study was conducted in Tongliao, China. Couples who were married during the time period between January 1, 1981 and December 31, 2003 were considered eligible for this study. A total of 27,413 individuals provided valid information via house-to-house interviews. The 12-month cumula...
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ژورنال
عنوان ژورنال: PLOS ONE
سال: 2016
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0165097