1. Department of Obstetrics and Gynecology, Faculty of Medicine, Srinakharinwirot University, Nakhon Nayok, Thailand.
2. Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital at Linkou, Kweishan, Taoyuan, Taiwan.
3. Chang Gung University College of Medicine, Kweishan, Taoyuan, Taiwan.
4. Department of Healthcare Information and Management, Ming Chuan University, Gui Shan, Taoyuan, Taiwan.