[1] Hyogo Canc Ctr, Dept Gynecol Oncol, Akashi, Japan
[2] Showa Univ, Sch Med, Dept Obstet & Gynecol, 1-5-8 Hatanodai,Shinagawa Ku, Tokyo 1428666, Japan
[3] Kyushu Univ, Grad Sch Med Sci, Dept Gynecol & Obstet, Fukuoka, Japan
[4] Canc Inst Hosp, Dept Gynecol, Tokyo, Japan
[5] Saitama Canc Ctr, Dept Gynecol, Saitama, Japan
[6] Natl Hosp Org Kyushu Canc Ctr, Gynecol Serv, Fukuoka, Japan
[7] Kanagawa Canc Ctr, Dept Gynecol, Yokohama, Kanagawa, Japan
[8] Natl Hosp Org Shikoku Canc Ctr, Dept Gynecol Oncol, Matsuyama, Japan
[9] Osaka Int Canc Inst, Dept Gynecol, Osaka, Japan
[10] Tohoku Univ, Sch Med, Dept Obstet & Gynecol, Sendai, Japan