[1] Sungkyunkwan Univ, Sch Med, Div Gynecol Oncol & Gynecol Minimally Invas Surg, Dept Obstet & Gynecol,Kangbuk Samsung Hosp, Seoul 110746, South Korea
[2] Sungkyunkwan Univ, Sch Med, Dept Urol, Kangbuk Samsung Hosp, Seoul 110746, South Korea
[3] Miaero Clin, Dept Obstet & Gynecol, Inchon, South Korea