1. Department of Head and Neck Surgery, David Geffen School of Medicine at UCLA (University of California, Los Angeles)
2. Pulmonary, Critical Care and Sleep Medicine Section, Pulmonary Division, Department of Medicine, Veterans Affairs Palo Health Care System, Stanford University, Palo Alto, California
3. Department of Otorhinolaryngology, Sleep Medicine Centre, Hospital CUF Porto, Porto, Portugal4Centre for Research in Health Technologies and Information Systems, University of Porto, Porto, Portugal
4. Department of Otorhinolaryngology, Hospital Bernardino Rivadavia, Buenos Aires, Argentina
5. Sleep Medicine Division, Department of Psychiatry and Behavioral Sciences, Stanford Hospital and Clinics, Redwood City, California
6. Sleep Surgery Division, Department of Otolaryngology–Head and Neck Surgery, Stanford Hospital and Clinics, Redwood City, California
7. Sleep Medicine Division, Department of Psychiatry and Behavioral Sciences, Stanford Hospital and Clinics, Redwood City, California8Division of Sleep Surgery and Medicine, Department of Otolaryngology–Head and Neck Surgery, Tripler Army Medical Center, Hon