[1] Univ Texas MD Anderson Canc Ctr, Houston, TX USA
[2] Univ Florence, Radiat Oncol Unit, Azienda Osped Univ Careggi, Florence, Italy
[3] Univ Maryland, Baltimore, MD USA
[4] Univ Texas MD Anderson Canc Ctr, Dept Genitourinary Med Oncol, Houston, TX USA
[5] Johns Hopkins, Sidney Kimmel Comprehens Canc Ctr, Baltimore, MD USA
[6] Univ Ghent, Ghent, Belgium
[7] British Columbia Canc Agcy, Prince George, BC, Canada
[8] Western Gen Hosp, Edinburgh Canc Ctr, Edinburgh, Scotland
[9] Gustave Roussy, Canc Ctr, Villejuif, France
[10] London Reg Canc Ctr, Dept Radiat Oncol, London, ON, Canada