1. Department of Psychiatry and Neurobehavioral Sciences University of Virginia School of Medicine Charlottesville VA USA
2. Department of Medicine—Cardiology University of North Carolina at Chapel Hill Chapel Hill NC USA
3. Section of Cardiovascular Medicine, Department of Internal Medicine Yale School of Medicine New Haven CT USA
4. Center for Outcomes Research and Evaluation Yale School of Medicine New Haven CT USA
5. VA Connecticut Healthcare System West Haven CT USA
6. Section of Geriatrics, Department of Internal Medicine Yale School of Medicine New Haven CT USA
7. Department of Anesthesiology Yale School of Medicine New Haven CT USA