1. Divisions of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital Chang Gung University College of Medicine Kaohsiung Taiwan
2. Department of Respiratory Therapy, Kaohsiung Chang Gung Memorial Hospital Chang Gung University College of Medicine Kaohsiung Taiwan
3. Department of Respiratory Care Chang Gung University of Science and Technology Chiayi Taiwan