Affiliation: | 1. Department of Respiratory Therapy, Taipei Veterans General Hospital, Taipei 112, Taiwan, ROC;2. Department of Anesthesiology, Taipei Veterans General Hospital, Taipei 112, Taiwan, ROC;3. Taipei Veterans General Hospital, Taipei 112, Taiwan, ROC;4. Institute of Clinical Medicine, National Yang-Ming University School of Medicine;5. Division of Infection, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei 112, Taiwan, ROC;6. Chest Department, Taipei Veterans General Hospital, Taipei 112, Taiwan, ROC;g National Yang-Ming University School of Medicine |