1. 1Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut.
2. 2Department of Internal Medicine, Section of Pulmonary, Critical Care & Sleep Medicine, Yale University School of Medicine, New Haven, Connecticut.
3. 3Department of Public Health Sciences, Medical University of South Carolina, Charleston, South Carolina.
4. 4Yale Cancer Center, Yale University School of Medicine, New Haven, Connecticut.
5. 5Smilow Cancer Hospital at Yale-New Haven, New Haven, Connecticut.