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