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Sex ratio and time to pregnancy: analysis of four large European population surveys
Objective To test whether the secondary sex ratio (proportion of male births) is associated with time to pregnancy, a marker of fertility. Design Analysis of four large population surveys. Setting Denmark and the United Kingdom. Participants 49 506 pregnancies. Main outcome measure Secondary sex rat...
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| Main Authors: | , , , |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
BMJ Publishing Group Ltd.
2007
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1819486/ https://ncbi.nlm.nih.gov/pubmed/17277014 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1136/bmj.39097.508426.BE |
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