1. Division of Pulmonary and Critical Care Medicine, China Medical University Hospital
2. Department of Internal Medicine, China Medical University Hospital, Taipei Branch
3. School of Medicine, China Medical University
4. Institute and Department of Public Health, School of Medicine, National Yang-Ming University
5. Division of Respiratory and Critical Care Physiology and Medicine, Department of Medicine, Harbor-UCLA Medical Center
6. Sleep Center; Craniofacial Center; Division of Craniofacial Orthodontics, Chang Gung Memorial Hospital