From The University of Texas M.D. Anderson Cancer Center, Houston, TX; University of California Los Angeles, Los Angeles; Kaiser Permanente, Oakland; Genentech Inc, South San Francisco, CA; Georgia Oncology Partners, Marietta, GA; Dana-Farber Cancer Institute, Boston, MA; Vanderbilt-Ingram Cancer Center, Nashville, TN; Memorial Sloan-Kettering Cancer Center, New York, NY, for the TRIBUTE Investigator Group (At 2005-09-01)