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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...
| Autores principales: | , , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
Public Library of Science
2016
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5082934/ https://www.ncbi.nlm.nih.gov/pubmed/27788188 http://dx.doi.org/10.1371/journal.pone.0165097 |