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