1. Department of Chest MedicineTaipei Veterans General Hospital Taipei Taiwan
2. School of Respiratory Therapy, College of MedicineTaipei Medical University Taipei Taiwan
3. Institute of Emergency and Critical Care MedicineNational Yang‐Ming University Taipei Taiwan
4. Faculty of MedicineNational Yang‐Ming University Taipei Taiwan
5. Institute of Public HealthNational Yang‐Ming University Taipei Taiwan
6. Institute of PhysiologyNational Yang‐Ming University Taipei Taiwan