[1] Univ Basel Hosp, Med Oncol, Basel, Switzerland
[2] Univ Hosp Bern, Med Oncol, Bern, Switzerland
[3] Cantonal Hosp Winterthur, Med Oncol, Winterthur, Switzerland
[4] Cantonal Hosp Baden, Oncol Hematol, Baden, Switzerland
[5] Oncol Inst Southern Switzerland, Med Oncol, Locarno, Switzerland
[6] Cantonal Hosp Graubunden, Oncol Hematol, Chur, Switzerland
[7] HFR Fribourg Cantonal Hosp, Med Oncol, Fribourg, Switzerland
[8] Cantonal Hosp Baselland, Oncol Hematol, Liestal, Switzerland
[9] Cantonal Hosp Lucerne, Med Oncol, Luzern, Switzerland
[10] Univ Basel Hosp, Clin Trial Unit, Basel, Switzerland
[11] Cantonal Hosp St Gallen, Oncol Hematol, St Gallen, Switzerland