1. Department of Emergency Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704302, Taiwan
2. School of Medicine, College of Medicine, National Cheng Kung University, Tainan 701401, Taiwan
3. Department of Emergency Medicine, College of Medicine, National Cheng Kung University, Tainan 701401, Taiwan
4. School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan