1. Department of Gynecologic Oncology, Aichi Cancer Center Hospital, Nagoya, Japan.
2. Department of Obstetrics and Gynecology, Mie University School of Medicine, Tsu, Japan.
3. Department of Obstetrics and Gynecology, Toyohashi Municipal Hospital, Toyohashi, Japan.
4. Department of Obstetrics and Gynecology, Toyota Memorial Hospital, Toyota, Japan.
5. Department of Obstetrics and Gynecology, Ise Red Cross Hospital, Ise, Japan.
6. Department of Obstetrics and Gynecology, Yokkaichi Municipal Hospital, Yokkaichi, Japan.
7. Department of Obstetrics and Gynecology, Kuwana City Medical Center, Kuwana, Japan.