University of Texas at Houston - MD Anderson Cancer Center, SWOG Statistical Center, University of Texas at Houston - Department of Translational Molecular Pathology, US Oncology Comprehensive Cancer Centers of Nevada, University of Texas at Houston - Department of Thoracic/Head and Neck Medical Oncology, University of Texas at Houston - MD Anderson Cancer Center, University of Texas at Houston - MD Anderson Cancer Center, Cancer Care Specialists of Illinois, Kaiser Permanente, Montana Cancer Consortium, University of Michigan at Ann Arbor - Medical School, SWOG Statistical Center, University of California, Davis - School of Medicine and University of California, Davis - School of Medicine