[1] Stanford Hosp & Clin, Dept Otolaryngol Head & Neck Surg, Div Sleep Surg, 801 Welch Rd, Stanford, CA 95304 USA
[2] Breathe Inst, 10921 Wilshire Blvd Suite 912, Los Angeles, CA 90024 USA
[3] Tripler Army Med Ctr, Div Sleep Surg, Dept Otolaryngol, Honolulu, HI 96859 USA