1. From the Fred Hutchinson Cancer Research Center, Seattle, WA; the Southwest Oncology Group Statistical Center, Seattle, WA; the Vanderbilt University Medical Center, Nashville, TN; the City of Hope National Medical Center, Duarte, CA; the University of New Mexico, Albuquerque, NM; the Loyola University Stritch School of Medicine, Maywood, IL; the Katmai Oncology Group, Anchorage, AK; and the Seattle Cancer Care Alliance, Seattle, WA.