Parental periconceptional smoking and male: female ratio of newborn infants.

作者: Misao Fukuda , Kiyomi Fukuda , Takashi Shimizu , Claus Yding Andersen , Anne Grete Byskov

DOI: 10.1016/S0140-6736(02)08362-9

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摘要: Summary We assessed whether the smoking habits of parents around time conception affects likelihood offspring being male or female. found that sex ratio (male to female) was lower when either one both smoked more than 20 cigarettes per day compared with couples in which neither smoked. lowest among children whose mothers and fathers (p

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