1. Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
2. School of Medicine, National Yang-Ming University, Taipei, Taiwan
3. Institute of Clinical Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
4. Institute of Public Health, National Yang-Ming University, Taipei, Taiwan
5. Division of Infectious Disease, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
6. Division of Cerebrovascular Diseases, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
7. Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan
8. Department of Critical Care Medicine, Taipei Veterans General Hospital, Taipei, Taiwan