[1] Univ Bern, Univ Hosp Bern, Inselspital, Dept Med Oncol, Bern, Switzerland
[2] Swiss Grp Clin Canc Res SAKK Competence Ctr, Stat, Bern, Switzerland
[3] Univ Zurich, Univ Zurich Hosp, Dept Radiat Oncol, Zurich, Switzerland
[4] Univ Hosp Basel, Clin Radiotherapy & Radiat Oncol, Basel, Switzerland
[5] Cantonal Hosp Graubuenden, Div Hematol Oncol, Chur, Switzerland
[6] Univ Hosp Geneva, Dept Oncol, Geneva, Switzerland
[7] Kantonsspital Winterthur, Dept Med Oncol, Winterthur, Switzerland
[8] Univ Fribourg, Cantonal Hosp Fribourg, Clin Oncol, Villars Sur Glane, Switzerland
[9] Northwestern Univ, Feinberg Sch Med, Lurie Comprehens Canc Ctr, Chicago, IL 60611 USA
[10] Univ Fribourg, Cantonal Hosp Fribourg, Clin Oncol, Villar Sur Glane, Switzerland
[11] Ctr Hosp Univ Vaudois CHUV, Dept Oncol, Lausanne, Switzerland
[12] Kantonsspital St Gallen, Dept Med Oncol & Hematol, St Gallen, Switzerland
[13] Cantonal Hosp Baden, Ctr Oncol Hematol, Baden, Switzerland
[14] Cantonal Hosp Baden, Ctr Comprehens Canc, Baden, Switzerland
[15] Univ Hosp Basel, Dept Med Oncol, Basel, Switzerland
[16] Univ Zurich, Univ Zurich Hosp, Dept Thorac Surg, Zurich, Switzerland
[17] Hop Valais, Clin Thorac Surg, Sion, Switzerland