1. Department of Perinatology and Gynecology, Kagawa University Graduate School of Medicine, Kida, Japan.
2. Department of Gynecologic Oncology, National Hospital Organization Shikoku Cancer Center, Matsuyama, Japan.
3. Department of Clinical Research Center, National Hospital Organization Shikoku Cancer Center, Matsuyama, Japan.
4. Department of Diagnostic Pathology, National Hospital Organization Kure Medical Center and Chugoku Cancer Center, Kure, Japan.
5. Department of Pathology, National Hospital Organization Shikoku Cancer Center, Matsuyama, Japan.
6. Department of Pathology, National Hospital Organization Kyushu Cancer Center, Fukuoka, Japan.
7. Department of Diagnostic Pathology, Nikko Memorial Hospital, Muroran, Japan.
8. Department of Gynecologic Oncology, National Hospital Organization Hokkaido Cancer Center, Sapporo, Japan.
9. Department of Obstetrics and Gynecology, National Hospital Organization Kure Medical Center and Chugoku Cancer Center, Kure, Japan.
10. Department of Obstetrics and Gynecology, National Defense Medical Collage Hospital, Tokorozawa, Japan.
11. Department of Gynecology, National Hospital Organization Fukuyama Medical Center, Fukuyama, Japan.
12. Department of Clinical Genetic Oncology, Cancer Institute Hospital of JFCR, Tokyo, Japan.
13. Gynecology Service, National Hospital Organization Kyushu Cancer Center, Fukuoka, Japan.