1. Division of Pulmonary, Critical Care, and Sleep Medicine; Medical College of Georgia at Augusta University, Augusta, Georgia
2. Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia
3. New York University Rory Meyers College of Nursing, New York, New York
4. Departments of Psychiatry and Neurology, University of Miami, Miami, Florida
5. Division of Cardiology, University of Washington, Seattle, Washington