[1] Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA
[2] Univ Klinikum Schleswig Holstein, Kiel Schleswig Holstein, Germany
[3] Canc Inst Gustave Roussy, Villejuif, France
[4] Royal Marsden Hosp, Urol Unit, London SW3 6JJ, England
[5] Antoni van Leeuwenhoek Hosp, Netherlands Canc Inst, Amsterdam, Netherlands
[6] Univ Calif Los Angeles, Jonsson Comprehens Canc Ctr, Los Angeles, CA 90024 USA
[7] Princess Margaret Hosp, Dept Med Oncol, Toronto, ON M4X 1K9, Canada
[8] Univ Toronto, Toronto, ON, Canada
[9] Angeles Clin & Res Inst, Los Angeles, CA USA
[10] Ist Nazl Tumori, Naples, Italy
[11] European Inst Oncol, Milan, Italy
[12] Christie Hosp, Manchester, Lancs, England
[13] Univ Zurich Hosp, CH-8091 Zurich, Switzerland
[14] Vanderbilt Univ, Med Ctr, Nashville, TN USA
[15] Univ Tubingen, Tubingen, Germany
[16] Hoffmann La Roche Inc, Pharma Res & Early Dev, Nutley, NJ 07110 USA
[17] Plexxikon Inc, Berkeley, CA USA
[18] Genentech Inc, San Francisco, CA 94080 USA
[19] Massachusetts Gen Hosp, Boston, MA 02114 USA
[20] Peter MacCallum Canc Ctr, Dept Med Oncol, Melbourne, Australia