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Influence of birth order and maternal age on the human sex ratio at birth.

作者信息

MACMAHON B, PUGH T F

出版信息

Br J Prev Soc Med. 1953 Apr;7(2):83-6. doi: 10.1136/jech.7.2.83.

Abstract
摘要

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本文引用的文献

1
A note on the sex ratio in anencephalus.
Br J Soc Med. 1952 Oct;6(4):265-6. doi: 10.1136/jech.6.4.265.

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