[1] Canc Res UK, Glasgow, Lanark, Scotland
[2] Royal Marsden Hosp, Sutton, Surrey, England
[3] Sunnybrook Hlth Sci Ctr, Toronto, ON M4N 3M5, Canada
[4] Hosp Marques de Valdecilla, Santander, Spain
[5] Univ Sydney, Sydney, NSW 2006, Australia
[6] Sydney Canc Ctr, Sydney, NSW, Australia
[7] HELIOS Klin, Berlin, Germany
[8] Hosp Clin San Carlos, Madrid, Spain
[9] Univ Hosp Gasthuisberg, B-3000 Louvain, Belgium
[10] Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA