1. Chest Department Taipei Veterans General Hospital Taipei Taiwan
2. Institutes of Clinical Medicine School of Medicine National Yang‐Ming University Taipei Taiwan
3. Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine Chang Gung Memorial Hospital Taoyuan Taiwan
4. Department of Internal Medicine Chang Gung University Taoyuan Taiwan
5. Department of Respiratory Therapy Chang Gung Memorial Hospital Taoyuan Taiwan
6. Department of Respiratory Care, College of Medicine Chang Gung University Taoyuan Taiwan
7. Graduate Institute of Clinical Medical Sciences Chang Gung University Taoyuan Taiwan