1. Division of Infectious Diseases, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
2. School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
3. Department of Medicine, National Yang-Ming University Hospital, Yilan, Taiwan, ROC
4. Division of Colon and Rectal Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
5. Department of Education and Research, Taipei City Hospital, Taipei, Taiwan, ROC
6. Department of Pathology, National Yang-Ming University Hospital, Yilan, Taiwan, ROC
7. Institute of Microbiology and Immunology, School of Life Science, National Yang-Ming University, Taipei, Taiwan, ROC
8. Institute of Clinical Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
9. Division of Molecular Pathology, Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
10. Department of Medicine, Mackay Medical College, Taipei, Taiwan, ROC
11. Division of Microbiology, Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
12. Institute of Public Health, School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC