1. Division of Palliative Medicine, Department of Medicine University of California San Francisco California USA
2. Michael E. DeBakey VA Medical Center Houston Texas USA
3. Department of Medicine, Health Services Research Baylor College of Medicine Houston Texas USA
4. Department of Communication Texas A&M University College Station Texas USA
5. Department of Psychiatry and Behavioral Sciences University of California San Francisco California USA
6. Department of Epidemiology & Biostatistics University of California San Francisco California USA
7. San Francisco Veterans Affairs Medical Center San Francisco California USA
8. Division of Geriatrics, Department of Medicine University of California San Francisco California USA
9. Department of Public Health Purdue University West Lafayette Indiana USA