Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States
Yale School of Medicine, New Haven, Connecticut, United States
Prisma Health Greenville Memorial Hospital, Greenville, South Carolina, United States
Philips, Pittsburgh, Pennsylvania, United States
Phoenix Children's Hospital, Phoenix, Arizona, United States
Pulmonary Rehabilitation Associates, Youngstown, Ohio, United States
Jefferson Associates and Internal Medicine, Clairton, Pennsylvania, United States
University Hospital Bonn (UKB Universitätsklinikum Bonn), Bonn, Germany
CHU Montpellier, Montpellier, France
Klinikum Kassel, Kassel, Germany
Vascular Care Connecticut, Darien, Connecticut, United States
CH Vichy, Vichy, Bourbonnais, France
Vein Center of Southwest Louisiana, Lake Charles, Louisiana, United States
Delta Waves, Inc., Colorado Springs, Colorado, United States
Florida Lung and Sleep Associates, Lehigh Acres, Florida, United States
Clayton Sleep Institute, Maplewood, Missouri, United States
Boston Medical Center, Boston, Massachusetts, United States
Massachusetts General Hospital, Boston, Massachusetts, United States
Radiology Consultants, Inc, Boardman, Ohio, United States
Sleep Disorder Center of Alabama, Birmingham, Alabama, United States
Pulmonary and Critical Care Associates of Baltimore, Baltimore, Maryland, United States