| Authors: |
Zhang XL; Department of Obstetrics and Gynecology, the Fourth Medical Center, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing 100048, China., Lu YX; Department of Obstetrics and Gynecology, the Fourth Medical Center, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing 100048, China., Shen WJ; Department of Obstetrics and Gynecology, the Fourth Medical Center, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing 100048, China., Zhao Y; Department of Obstetrics and Gynecology, the Fourth Medical Center, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing 100048, China., Niu K; Department of Obstetrics and Gynecology, the Fourth Medical Center, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing 100048, China., Wang WY; Department of Obstetrics and Gynecology, the Fourth Medical Center, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing 100048, China., Qin L; Department of Obstetrics and Gynecology, the Fourth Medical Center, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing 100048, China., Yan JJ; Department of Obstetrics and Gynecology, the Fourth Medical Center, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing 100048, China. |