[1] Kantonsspital St Gallen, Dept Med Oncol & Hematol, St Gallen, Switzerland
[2] Katholieke Univ Leuven, Univ Hosp Leuven, Louvain, Belgium
[3] Royal Marsden Hosp, London SW3 6JJ, England
[4] Hosp Santa Maria Misericordia, Dept Oncol, Perugia, Italy
[5] CHU Vaudois, Dept Oncol, Lausanne, Switzerland
[6] Vall dHebron Univ Hosp, Med Oncol Serv, Barcelona, Spain