1. U Texas M. D. Anderson Cancer Ctr, Houston, TX; UCLA Medical Center, Los Angeles, CA; NW Georgia Oncology Centers, Marietta, GA; Memorial Sloan-Kettering Cancer Center, New York, NY; Kaiser Permanente Medical Center, Vallejo, CA; University of Chicago Hospital, Chicago, IL; Dana Farber Cancer Institute, Boston, MA; Vanderbilt-Ingram Cancer Center, Nashville, TN; Genentech, South San Francisco, CA