The Relationship Between Offspring Sex Ratio and Vasectomy Utilization
نویسندگان
چکیده
منابع مشابه
Does the Mother or Father Determine the Offspring Sex Ratio? Investigating the Relationship between Maternal Digit Ratio and Offspring Sex Ratio
OBJECTIVE In mammals, high parental testosterone levels present around the time of conception are thought to skew offspring sex ratio toward sons. The second to fourth digit ratio (digit ratio) is now widely accepted as a negative correlate of prenatal testosterone. Thus, we investigated the association between digit ratio and offspring sex ratio. METHODS A total of 508 Korean patients (257 m...
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15 صفحه اولThe Association Between Menarche Age and First Offspring Sex Ratio
Background: Offspring sex ratio (OSR) serves as an important social factor, and various other factors are hypothesized to be associated with it, such as maternal diet, time of ovulation and insemination, environmental phenomena, parental age, and infertility treatment. Objectives: This research was performed to assess the association between mothers’ menarche age, first pregnancy age, and sex r...
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ژورنال
عنوان ژورنال: Urology
سال: 2017
ISSN: 0090-4295
DOI: 10.1016/j.urology.2016.11.039