1. Department of Epidemiology and Public Health, Yale University School of Medicine, New Haven, Connecticut.
2. Center for Psycho-Oncology and Palliative Care Research, Dana-Farber Cancer Institute, and Department of Psychiatry, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.
3. Palliative Care Service, University of Texas Southwestern Medical Center, Dallas, Texas.
4. Department of Psychology, Yale University, New Haven, Connecticut.