1. VA Connecticut Healthcare System, West Haven, Connecticut, USA.
2. Section of General Internal Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA.
3. Section of Geriatrics, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA.
4. Department of Psychiatry and Yale School of Medicine, New Haven, Connecticut, USA.
5. Yale Center for Medical Informatics, New Haven, Connecticut, USA.
6. Department of Emergency Medicine, Yale School of Medicine, New Haven, Connecticut, USA.
7. Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA.