1. School of Nursing, Chang Gung University, Taoyuan, Taiwan
2. Clinical Nurse, National Taiwan University Hospital, Taipei, Taiwan
3. Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, University College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
4. Clinical Informatics and Medical Statistics Research Center, Chang Gung University, Taoyuan, Taiwan