1. Divisions of Pulmonary & Critical Care Medicine, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital Chang Gung University College of Medicine Kaohsiung Taiwan
2. Ph.D. Program in Environmental and Occupational Medicine, College of Medicine, and Research Center for Precision Environmental Medicine Kaohsiung Medical University Kaohsiung Taiwan
3. Department of Occupational and Environmental Medicine Kaohsiung Medical University Hospital Kaohsiung Taiwan
4. Department of Respiratory Therapy, Kaohsiung Chang Gung Memorial Hospital Chang Gung University College of Medicine Kaohsiung Taiwan
5. Department of Respiratory Care Chang Gung University of Science and Technology Chiayi Taiwan