1. Department of Internal Medicine, Chi Mei Medical Center, Tainan, Taiwan
2. Department of Internal Medicine, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
3. School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung, Taiwan
4. Department of Intensive Care Medicine, Chi Mei Medical Center, Tainan, Taiwan
5. School of Medicine, College of Medicine, National Sun Yat-sen University, Kaohsiung, Taiwan