1. Department of Preventive Medicine; Taichung Tzu Chi Hospital; Taiwan. No. 66, Sec. 1, Fongsing Road, Tanzi District, Taichung City 427 Taiwan
2. Division of Pulmonology and Critical Care, Department of Internal Medicine; Dalin Tzu Chi Hospital; Taiwan. No.2, Minsheng Rd, Dalin Township Chiayi County 622 Taiwan
3. Department of Medical Imaging and Radiological Sciences; Central Taiwan University of Science and Technology; No. 11, Buzih Lane 40601 Taiwan
4. Department of Medical Research; China Medical University Hospital, China Medical University; Taiwan. No. 2, Yu der Road, Taichung City 40447 Taiwan
5. Division Chest, Department of Internal Medicine; Taichung Tzu Chi Hospital; Taiwan. No. 66, Sec. 1, Fongsing Road, Tanzi District, Taichung City 427 Taiwan
6. Department of Internal Medicine, Sleep Medicine Center; China Medical University Hospital; Taichung Taiwan
7. Department of Respiratory Therapy; College of Health Care, China Medical University; Taichung Taiwan
8. Department of Healthcare Administration; Asia University; Taichung Taiwan