[1] Univ Birmingham, Div Canc Studies, Birmingham, W Midlands, England
[2] Aarhus Univ Hosp, Dept Urol, Skejby, Denmark
[3] Univ Med Ctr, Dept Med Oncol, Utrecht, Netherlands
[4] Inst Curie, Dept Med Oncol, Paris, France
[5] AstraZeneca, Macclesfield, Cheshire, England
[6] Georgetown Univ, Lombardi Comprehens Canc Ctr, Washington, DC USA