1. Harvard Radiation Oncology Program, Brigham and Women's Hospital, Dana Farber Cancer Institute, Massachusetts General Hospital, Harvard Medical School, Boston, MA
2. Division of Medical Oncology, Department of Medicine, Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL
3. Department of Medicine, University of Wisconsin—Madison, Madison, WI
4. Medical Oncology, Lowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA