1. Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine , Taipei , Taiwan
2. Department of Internal Medicine, Hsinchu MacKay Memorial Hospital , Hsinchu , Taiwan
3. Department of Internal Medicine, Kaohsiung Municipal Ta-Tung Hospital , Kaohsiung , Taiwan
4. Department of Internal Medicine, Kaohsiung Medical University Hospital and College of Medicine, Kaohsiung Medical University , Kaohsiung , Taiwan
5. Department of Internal Medicine, Far Eastern Memorial Hospital , New Taipei City , Taiwan
6. School of Medicine, National Yang Ming Chiao Tung University , Taipei , Taiwan
7. Department of Internal Medicine, National Taiwan University Hospital Hsin-Chu Branch , Hsinchu , Taiwan
8. Department of Tropical Medicine and Parasitology, National Taiwan University College of Medicine , Taipei , Taiwan
9. Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare , Taoyuan , Taiwan
10. School of Public Health, Taipei Medical University , Taipei , Taiwan
11. Department of Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University , Tainan , Taiwan
12. School of Medicine, College of Medicine, National Sun Yat-Sen University , Kaohsiung , Taiwan
13. Department of Internal Medicine, National Taiwan University Cancer Center , Taipei , Taiwan
14. Department of Internal Medicine, Taichung Veterans General Hospital , Taichung , Taiwan
15. Department of Internal Medicine, Chung Shan Medical University Hospital , Taichung , Taiwan
16. School of Medicine, Chung Shan Medical University , Taichung , Taiwan
17. School of Public Health, National Yang Ming Chiao Tung University , Taipei , Taiwan
18. Department of Internal Medicine, National Taiwan University Hospital Yun-Lin Branch , Yun-Lin , Taiwan