[1] Univ Calif Los Angeles, Los Angeles, CA USA
[2] Ctr Comprehens Canc, San Francisco, CA USA
[3] Henry Ford Hlth System, Detroit, MI USA
[4] Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA
[5] Univ Virginia, Charlottesville, VA USA
[6] Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA
[7] Genentech Inc, San Francisco, CA 94080 USA
[8] Duke Univ, Durham, NC USA