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