Apnea

• University of Arizona School of Medicine — Tucson, Arizona, United States

• UBC Hospital — Vancouver, British Columbia, Canada

• Center for Circadian and Sleep Medicine, Northwestern University — Chicago, Illinois, United States

• Weill Cornell Medicine Center for Sleep Medicine — New York, United States

• Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau — Barcelona, Spain

• Alabama Sleep Clinic — Huntsville, Alabama, United States
• Pulmonary Disease Specialists - Central Florida Sleep Centre — Kissimmee, Florida, United States
• Clayton Sleep Institute — St Louis, Missouri, United States
• Ohio Sleep Medicine and Neurosciences Institute — Dublin, Ohio, United States

• Insituto Nacional de Enfermedades Respiratorias — Mexico City, Delegacion Tlalpan, Mexico

• California Center for Sleep Disorders — Alameda, California, United States

• Hospital Otávio de Freitas — Recife, Pernambuco, Brazil

Not specified