1. Department of Medicine, Boston University, Boston, Massachusetts, USA.
2. Sections of General Internal Medicine, Boston Medical Center, Boston, Massachusetts, USA.
3. Sections of Hematology and Medical Oncology, Boston Medical Center, Boston, Massachusetts, USA.
4. Harvard Medical School, Boston, Massachusetts, USA.
5. Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA.
6. ACP Decisions Non-Profit Foundation Newtown, Massachustts, USA.