1. Department of Obstetrics and Gynecology Faculty of Medicine Tokyo Women's Medical University Tokyo Japan
2. Department of Gynecology Kitasato University Kitasato Institute Hospital Tokyo Japan
3. Department of Medical Technology Ehime Prefectural University of Health Sciences Iyo‐gun Ehime Japan
4. Departments of Obstetrics and Gynecology JA Suzuka General Hospital Suzuka Mie Japan
5. Department of Cytology PCL Japan Pathology and Cytology Center PCL Inc Kawagoe Saitama Japan
6. Department Obstetrics and Gynecology Faculty of Medicine Dokkyo Medical University Mibumachi Shimotsuga‐gun Tochigi Japan
7. Department of Surgical Pathology Tokyo Women's Medical University Tokyo Japan
8. Department of Nursing Faculty of Health Sciences Ehime Prefectural University of Health Sciences Iyo‐gun Ehime Japan
9. Cancer Education and Research Center Division of Health Sciences Osaka University Graduate School of Medicine Division Health Science Suita Osaka Japan