1. Department of Obstetrics and Gynecology, Kasturba Medical College, MAHE (Manipal Academy of Higher Education), Manipal, India.
2. Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital at Linkou Medical Center, Kweishan, Taoyuan, Taiwan.
3. Department of Obstetrics and Gynecology, Buddhachinnaraj Hospital and Naresuan University, Phitsanulok, Thailand.
4. Chang Gung University College of Medicine, Kweishan, Taoyuan, Taiwan.