1. Department of Otolaryngology‐Head and Neck Surgery, Division of Sleep Surgery Stanford Hospital and Clinics Stanford California U.S.A.
2. Department of Otolaryngology – Head and Neck Surgery Loyola University Medical Center Maywood, Illinois U.S.A.
3. Center of Excellence in Otolaryngology Head and Neck Surgery Rajavithi Hospital Bangkok Thailand
4. College of Medicine Rangsit University Bangkok Thailand
5. Otolaryngology / Head & Neck Surgery Northwestern University Chicago Illinois U.S.A.