[1] Kantonsspital St Gallen, Dept Med Oncol, St Gallen, Switzerland
[2] Oncol Inst Southern Switzerland, Dept Med Oncol, Bellinzona, Switzerland
[3] Univ Hosp, Dept Med Oncol, Bern, Switzerland
[4] Kantonsspital Graubunden, Dept Med Oncol, Chur, Switzerland
[5] Kantonsspital Graubunden, Oncol Hematol, Chur, Switzerland
[6] Swiss Grp Clin Canc Res, Coordinating Ctr, Bern, Switzerland
[7] Free Univ Berlin, Inst Pharm, Dept Clin Pharm & Biochem, Berlin, Germany
[8] Kantonsspital St Gallen, Med Oncol & Hematol Dept, St Gallen, Switzerland