1. Department of Obstetrics and Gynecology; Chang Gung Memorial Hospital, Keelung Medical Center; Keelung Taiwan Republic of China
2. Division of Urogynecology, Department of Obstetrics and Gynecology; Linkou, Chang Gung Memorial Hospital, Linkou Medical Center; Taoyuan Taiwan Republic of China
3. School of Medicine, Obstetrics and Gynecology; Chang Gung University; Taoyuan Taiwan Republic of China
4. Department of Obstetrics and Gynecology; De La Salle University Medical Center; Dasmariñas Cavite Philippines
5. Department of Obstetrics and Gynecology; Kuala Lumpur Hospital; Kuala Lumpur Malaysia
6. Department of Obstetrics and Gynecology; Kuching Specialist Hospital; Sarawak Malaysia
7. Department of Obstetrics and Gynecology; Dr. Pablo O. Torre Memorial Hospital; Bacolod City Philippines