1. Division of Sleep Surgery, Department of Otolaryngology-Head and Neck Surgery; Stanford University Medical Center; Stanford California
2. School of Medicine; Stanford University; Stanford California
3. Division of Sleep Medicine, Department of Psychiatry and Behavioral Sciences; Stanford Hospital and Clinics; Stanford California
4. Division of Sleep Surgery and Medicine, Department of Otolaryngology-Head and Neck Surgery; Tripler Army Medical Center; Honolulu Hawaii U.S.A.
5. Department of Otolaryngology, Head and Neck Surgery; Cathay General Hospital; Taipei Taiwan
6. School of Medicine; Fu Jen Catholic University; Taipei Taiwan