1. Institute of Biomedical EngineeringNational Taiwan University Taipei Taiwan
2. Division of Pulmonary Medicine, Department of Internal Medicine and Department of Critical Care MedicineChung Shan Medical University Hospital Taichung Taiwan
3. School of MedicineChung Shan Medical University Hospital Taichung Taiwan
4. Department of RehabilitationChung Shan Medical University Hospital Taichung Taiwan
5. Physical Therapy RoomChung Shan Medical University Hospital Taichung Taiwan
6. Department of PhotonicsCollege of Electrical and Computer Engineering, National Chiao Tung University Hsinchu Taiwan