该研究发表于《英国妇产科学杂志》本月刊上，研究结果令该项研究的首席研究者Walker博士很惊讶。
The findings published in this month's British Journal of Obstetrics and Gynecology surprised the study's lead author, Dr.
该研究发表于《英国妇产科学杂志》本月刊上，研究结果令该项研究的首席研究者Walker博士很惊讶。
The findings published in this month's British Journal of Obstetrics and Gynecology surprised the study's lead author, Dr.
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