1. Department of Obstetrics and Gynecology, Albasheer Hospital, Amman, Jordan.
2. Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital at Linkou, Kweishan, Taoyuan, Taiwan.
3. Department of Obstetrics and Gynecology, Faculty of Medicine, University of Medicine, Yangon, Myanmar.
4. Department of Obstetrics and Gynecology, Chang Gung University College of Medicine, Kweishan, Taoyuan, Taiwan.