Int J Gynecol Cancer 2014 Sep;24(7):1181-9
*Department of Obstetrics and Gynecology, The Jikei University Kashiwa Hospital, Kashiwa; and †Department of Obstetrics and Gynecology, The Jikei University School of Medicine; ‡Department of Obstetrics and Gynecology, The Jikei University Daisan Hospital; and §Department of Obstetrics and Gynecology, The Jikei University Katsushika Medical Center, Tokyo, Japan.