1. Department of Pediatrics, Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan
2. College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
3. Chang Gung Medical Education Research Centre, Chang Gung Memorial Hospital, Linkou, Taoyuan 333, Taiwan
4. Department of Emergency Medicine, Chang Gung Memorial Hospital, Linkou, Taoyuan 333, Taiwan
5. Department of Psychology, Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan