Center for Sleep and Wake Disorders, Chevy Chase, Maryland, United States
Berks Schuylkill Respiratory Specialists, Ltd., Reading, Pennsylvania, United States
Pulmonary Disease Specialists, PA, d/b/a PDS Research, Kissimmee, Florida, United States
Jefferson Associates in Internal Medicine,LTD, Clairton, Pennsylvania, United States
University of Florida, Jacksonville, Jacksonville, Florida, United States
Sleep Disorders Center of Georgia, Inc., Atlanta, Georgia, United States
Paul Wylie, MD, Little Rock, Arkansas, United States
Shalini Manchanda, MD, Indianapolis, Indiana, United States
Florida Lung & Sleep Associates, Lehigh Acres, Florida, United States
New York Medical College, Hawthorne, New York, United States
Northwestern University, Chicago, Illinois, United States
Sleep Therapy and Research Center, San Antonio, Texas, United States
Florida Lung & Sleep Associates, Lehigh Acres, Florida, United States
Sleep Disorders Center of Alabama, Birmingham, Alabama, United States
Universitätsklinikum der Ruhr-Universität Bochum, Bad Oeynhausen, Germany
Charité, Berlin, Germany
University Hospital Regensburg, Regensburg, Germany
Pullmonary Rehabilition Associates, Youngstown, Ohio, United States
Pittsburgh Pulmonary Associates, Jefferson Hills, Pennsylvania, United States