1. Department of Emergency Medicine, National Cheng Kung University Hospital, College of Medicine National Cheng Kung University Tainan Taiwan
2. School of Medicine, College of Medicine National Cheng Kung University Tainan Taiwan
3. Department of Public Health, College of Medicine National Cheng Kung University Tainan Taiwan
4. National Institute of Infectious Diseases and Vaccinology National Health Research Institutes Tainan Taiwan
5. Division of Infectious Diseases, Department of Internal Medicine, National Cheng Kung University Hospital College of Medicine, National Cheng Kung University Tainan Taiwan