1. Department of Respiratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
2. Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
3. Department of Medicine, University of Florida, Gainesville, FL
4. Bronson Sleep Health, Kalamazoo, MI
5. Department of Medicine, National Jewish Health, Denver, CO
6. Philips Respironics, Inc., Monroeville, PA
7. Department of Medicine, Philadelphia Veterans Affairs Medical Center, Philadelphia, PA