[1] Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA
[2] Dana Farber Canc Inst, Boston, MA 02115 USA
[3] Univ Calif Los Angeles, San Francisco, CA USA
[4] Univ Calif Los Angeles, Los Angeles, CA USA
[5] NCI, Rockville, MD USA
[6] Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA
[7] Univ Wisconsin Hosp, Madison, WI USA