1. Sleep Center, Department of Pulmonary and Critical Care MedicineChang Gung Memorial Hospital Taoyuan Taiwan
2. Department of Respiratory TherapyChang Gung University Taoyuan Taiwan
3. Department of Respiratory and Sleep MedicineRoyal North Shore Hospital Sydney NSW Australia
4. Charles Perkins Centre, Faculty of Medicine and HealthUniversity of Sydney Sydney NSW Australia
5. Department of Pulmonary and Critical Care MedicineChang Gung Memorial Hospital Chiayi Taiwan
6. Sleep Center, Department of Craniofacial OrthodonticsChang Gung Memorial Hospital Taoyuan Taiwan