1 Department of Obstetrics and Gynecology, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China.
2 Department of Obstetrics and Gynecology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China.
3 Department of Obstetrics and Gynecology, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China. wxt65@vip.163.com.
4 Department of Obstetrics and Gynecology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China. wxt65@vip.163.com.
5 The Laboratory of Medical Science and Technology Innovation Center (Institute of Translational Medicine), Shandong First Medical University (Shandong Academy of Medical Sciences) of China, Jinan, 250117, Shandong, China. wxt65@vip.163.com.
6 Key Laboratory of Birth Regulation and Control Technology of National Health Commission of China, Shandong Provincial Maternal and Child Health Care Hospital, 328 Jingshi East Road, Jinan, 250025, Shandong, China. wxt65@vip.163.com.
7 Department of Obstetrics and Gynecology, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China. lilei@sdfmu.edu.cn.
8 Department of Obstetrics and Gynecology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China. lilei@sdfmu.edu.cn.
9 The Laboratory of Medical Science and Technology Innovation Center (Institute of Translational Medicine), Shandong First Medical University (Shandong Academy of Medical Sciences) of China, Jinan, 250117, Shandong, China. lilei@sdfmu.edu.cn.