From the Department of Thoracic/Head and Neck Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston; Arlington Cancer Center, Dallas, TX; Department of Oncology, Washington University, St Louis, MO; Winship Cancer Institute, Emory University, Atlanta, GA; Department of Medicine, Section of Hematology and Oncology, Head and Neck Oncology Program, University of Chicago, Chicago, IL; and Department of Clinical Affairs, ImClone Systems, Branchburg, NJ (At 2005-08-20)