1. Department of Emergency Medicine, Lin-Kou Medical Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan and College of Medicine, Chang Gung University, Taoyuan, Taiwan
2. Department of Emergency Medicine, Lin-Kou Medical Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan and School of Medicine, International Medical University, Kuala Lumpur, Malaysia
3. Sarawak General Hospital, Kuching, Sarawak, Malaysia