1. Department of Obstetrics and Gynecology; Chang Gung Memorial Hospital; Keelung Medical Center; Keelung Taiwan Republic of China
2. Department of Obstetrics and Gynecology, Division of Urogynecology, Chang Gung Memorial Hospital; Linkou Medical Center; Taoyuan, Linkou Taiwan Republic of China
3. Chang Gung University; School of Medicine; Taoyuan Taiwan Republic of China
4. Fellow, Department of Obstetrics and Gynecology; Division of Urogynecology; Chang Gung Memorial Hospital; Linkou Medical Center; Taoyuan Taiwan Republic of China
5. Department of Obstetrics and Gynecology; Cebu Velez General Hospital; Cebu City Philippines
6. Department of Obstetrics and Gynecology; Dr. Pablo O. Torre Memorial Hospital; Bacolod City Philippines