1. Division of Otolaryngology, Sleep Surgery, and Sleep Medicine; Tripler Army Medical Center; Honolulu Hawaii U.S.A.
2. Sleep Medicine Division, Department of Psychiatry and Behavioral Sciences; Stanford Hospital and Clinics; Redwood City California U.S.A.
3. Sleep Surgery Department; Instituto Ferrero de Neurología y Sueño; Buenos Aires Argentina
4. Division of Sleep Surgery and Medicine, Department of Otolaryngology-Head and Neck Surgery; Stanford Hospital and Clinics; Stanford California U.S.A.
5. Department of Clinical Sciences and Translational Medicine; University of Rome; Rome Tor Vergata, Italy
6. Department of Otorhinolaryngology/Sleep Medicine Center; , Companhia União Fabril & Centro Hospitalar Entre Douro e Vouga Hospital; Porto Portugal
7. Center for Research in Health Technologies and Information Systems; University of Porto; Porto Portugal