1. Department of Obstetrics and Gynecology Chang Gung Memorial Hospital, Linkou Taoyuan Taiwan
2. Chang Gung Medical Education Research Centre (CG‐MERC) Chang Gung Memorial Hospital, Linkou Taoyuan Taiwan
3. Department of Emergency Medicine Chang Gung Memorial Hospital, Linkou Taoyuan Taiwan
4. College of Medicine Chang Gung University Taoyuan Taiwan