Besides because spermatozoon quality drops,bring about infecund not outside Yo, the female is excessive late childbirth of marry at a mature age also is to cause one of infecund barren causes.

 
  • 除了因精子质量下降导致不孕不育外,女性过度晚婚晚育也是导致不孕不育的原因之一。
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