1. Cheeloo College of Medicine Shandong University Jinan City China
2. Department of Pathology, School of Basic Medical Science, Cheeloo College of Medicine Shandong University Jinan City China
3. Department of Pathology Qilu Hospital of Shandong University Jinan City China
4. Department of Pathology Affiliated Hospital of Jining Medical University Jining City China
5. Department of Medical Imaging Affiliated Hospital of Jining Medical University Jining City China
6. Department of Obstetrics and Gynecology Jinan People's Hospital Jinan City China
7. Department of Obstetrics and Gynecology Tai'an City Central Hospital Tai'an City China
8. Department of Obstetrics and Gynecology Weifang People's Hospital Weifang City China
9. Department of Obstetrics and Gynecology Women and Children's Hospital, Qingdao University Qingdao City China
10. Department of Pathology KingMed Diagnostics Jinan City China
11. Department of Obstetrics and Gynecology, Shandong Provincial Qianfoshan Hospital Shandong University Jinan City China
12. Department of Obstetrics and Gynecology The Affiliated Hospital of Qingdao University Qingdao City China
13. Department of Obstetrics and Gynecology Qilu Hospital of Shandong University Jinan City China