1. Section of Pulmonary, Critical Care, and Sleep Medicine
2. Section of Pulmonary, Critical Care, and Sleep Medicine and
3. VA Connecticut Healthcare System
4. Pain Research, Informatics, Multi-morbidities, and Education Center, Department of Veterans Affairs, and
5. Division of Pulmonary and Critical Care Medicine, University of Washington, Seattle, Washington
6. Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut
7. Veterans Administration Center for Study of Healthcare Innovation, Implementation and Policy, Veterans Administration Greater Los Angeles Healthcare System, Los Angeles, California; and
8. Division of General Internal Medicine, UCLA David Geffen School of Medicine, Los Angeles, California
9. Veterans Aging Cohort Study Coordinating Center, Veterans Administration Connecticut Health Care System, West Haven, Connecticut