Sleep Apnea, Obstructive

• Sleep and Epilepsy Center, Neurocenter of Southern Switzerland, Ospedale Civico di Lugano, Ente Ospedaliero Cantonale — Lugano, Canton Ticino, Switzerland

Not specified

• Sleep Disorders Center of Alabama — Birmingham, Alabama, United States
• Pulmonary Associates — Glendale, Arizona, United States
• Mayo Clinic in Arizona — Scottsdale, Arizona, United States
• Preferred Research Partners — Little Rock, Arkansas, United States

• Evangelisches Krankenhaus Herne — Herne, Germany

Not specified

• Duke University Medical Center — Durham, North Carolina, United States

• Bezmialem Vakif Universitesi, Department of Physiotherapy and Rehabilitation — Istanbul, Eyup, Turkey (Türkiye)

• Sleep Center of Tulsa - Midtown — Tulsa, Oklahoma, United States
• Sleep Center of Tulsa - South — Tulsa, Oklahoma, United States

• Clinique Saint-Luc Bouge — Namur, Belgium

• University Hospital Ostrava — Ostrava, Moravian-Silesian Region, Czechia