1. Section of Pulmonary and Critical Care Medicine, The University of Chicago, Chicago, Illinois
2. Division of Pulmonary and Sleep Medicine, Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
3. University of Missouri–Kansas City School of Medicine, Kansas City, Missouri
4. Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, Minnesota
5. Sleep Medicine Service, Comprehensive Medical Practice, University of Toledo, Toledo, Ohio
6. Division of Pediatric Pulmonology and Sleep Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
7. Department of Pediatrics, Yale School of Medicine, New Haven, Connecticut
8. Division of Pulmonary, Critical Care, Sleep, and Occupational Medicine, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
9. Department of Neurology, Indiana University School of Medicine, Indianapolis, Indiana