| Authors: |
Cui YM; Department of Obstetrics and Gynecology, Dalian Women and Children's Medical Center (Group), Dalian, Liaoning Province, 116000, China., Shan YM; Department of Obstetrics and Gynecology, Affiliated Hospital Of Gansu Medical College, Pingliang, Gansu Province, 744000, China., Xiao YY; Department of Obstetrics and Gynecology, Dalian Women and Children's Medical Center (Group), Dalian, Liaoning Province, 116000, China., Gao Y; Department of Obstetrics and Gynecology, Dalian Women and Children's Medical Center (Group), Dalian, Liaoning Province, 116000, China., Yu XC; Department of Obstetrics and Gynecology, Dalian Women and Children's Medical Center (Group), Dalian, Liaoning Province, 116000, China., Jiang M; Department of Obstetrics and Gynecology, Dalian Women and Children's Medical Center (Group), Dalian, Liaoning Province, 116000, China., Wang HL; Department of Obstetrics and Gynecology, Dalian Women and Children's Medical Center (Group), Dalian, Liaoning Province, 116000, China. wanghl_dl@126.com. |