1. Division of Pulmonary, Critical Care and Sleep, The Ohio State University, Columbus, Ohio
2. San Jose Military Entrance Processing Station, Mountain View, California
3. Concentra, Inc., Grand Rapids, Michigan
4. OccuMedix, Inc., Dresher, Pennsylvania
5. Center for Injury Research and Policy, Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
6. Division of Sleep Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
7. Corporal Michael Crescenz VA Medical Center, Philadelphia, Pennsylvania