1. Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
2. Department of Medicine, School of Medicine, University of California, San Francisco
3. Commonwealth Care Alliance, Boston, Massachusetts
4. Division of Pulmonary/Critical Care Medicine, San Francisco Veterans Affairs Medical Center and University of California, San Francisco
5. Department of Medicine, San Francisco Veterans Affairs Medical Center, San Francisco, California
6. Division of Hematology/Oncology, San Francisco Veterans Affairs Medical Center, San Francisco, California