[1] Erasmus Univ, Med Ctr, Rotterdam, Netherlands
[2] European Org Res Treatment Canc, Brussels, Belgium
[3] M SK Mem Canc Ctr, Warsaw, Poland
[4] Univ Birmingham, Birmingham, W Midlands, England
[5] European Inst Oncol, Milan, Italy
[6] Addenbrookes Hosp, Ctr Oncol, Cambridge, England
[7] Norwegian Radium Hosp, Oslo, Norway
[8] Pascale Natl Canc Inst, Naples, Italy
[9] St James Hosp, Leeds, W Yorkshire, England
[10] Inst Gustave Roussy, Villejuif, France