1. School of Medicine, College of Medicine, National Sun Yat-sen University, Kaohsiung, Taiwan
2. Department of Anesthesiology, Chi Mei Medical Center, Tainan City, Taiwan
3. Department of Anesthesiology, Chi Mei Medical Center, Chiali, Tainan City, Taiwan
4. Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
5. Department of Anesthesiology, E-Da Dachang Hospital, I-Shou University, Kaohsiung City, Taiwan
6. Department of Psychiatry, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung City, Taiwan
7. Department of Family Medicine, Show Chwan Memorial Hospital, Changhua City, Taiwan
8. Department of Emergency Medicine, E-Da Hospital, I-Shou University, Kaohsiung City, Taiwan
9. School of Medicine, College of Medicine, I-Shou University, Kaohsiung City, Taiwan.