1. From the Thoracic Oncology Service, Division of Solid Tumor Oncology, Departments of Medicine, Pathology, Radiology, Human Oncology and Pathogenesis Program, Epidemiology and Biostatistics, and the Joan and Sanford Weill Medical College of Cornell University, Memorial Sloan-Kettering Cancer Center, New York, NY; Division of Hematology/Oncology, Northwestern University Feinberg School of Medicine, Chicago, IL; Vanderbilt-Ingram Cancer Center, Nashville, TN; and the M.D. Anderson Cancer Center, Houston, TX.