[1] Ludwig Maximilians Univ Munchen, Univ Hosp Munich, Dept Palliat Med, Munich, Germany
[2] Univ Med Ctr Hamburg Eppendorf, Dept Oncol Hematol & Bone Marrow Transplant, Palliat Care Unit, Hamburg, Germany
[3] Univ Cologne, Dept Palliat Med, Fac Med, Cologne, Germany
[4] Univ Hosp, Cologne, Germany
[5] Hannover Med Sch, Inst Gen Practice & Palliat Med, Palliat Care Reserch Grouph Grp, Hannover, Germany
[6] Univ Hosp Aachen, Dept Palliat Med, Aachen, Germany
[7] Jena Univ Hosp, Dept Palliat Med, Jena, Germany
[8] Georg August Univ Goettingen, Univ Med Ctr, Dept Palliat Med, Gottingen, Germany
[9] Univ Wurzburg, Univ Hosp, Interdisciplinary Ctr Palliat Med, Wurzburg, Germany
[10] Heinrich Heine Univ Duesseldorf, Univ Hosp, Interdisciplinary Ctr Palliat Care, Dusseldorf, Germany
[11] Heinrich Heine Univ Duesseldorf, Univ Hosp, Dept Anesthesiol, Dusseldorf, Germany
[12] Univ Hosp Bonn, Dept Palliat Med, Bonn, Germany
[13] Friedrich Alexander Univ Erlangen Nurnberg FAU, Univ Hosp Erlangen, Dept Palliat Med, Ctr Comprehens Canc,CCC Erlangen EMN, Erlangen, Germany
[14] Univ Rostock, Dept Med, Clin Hematol 3, Palliat Med,Oncol,CCC Mecklenburg Vorpommern,Med, Rostock, Germany
[15] Univ Freiburg, Dept Palliat Med, Med Ctr, Fac Med, Freiburg, Germany
[16] Univ Hosp, Fac Med, Cologne, Germany
[17] Univ Cologne, Dept Internal Med, Univ Hosp, Cologne, Germany
[18] Univ Cologne, Ctr Integrated Oncol Aachen Bonn Cologne Dusseldo, Univ Hosp, Cologne, Germany
[19] Univ Cologne, Clin Trials Ctr ZKS, Univ Hosp, Cologne, Germany
[20] Univ Cologne, Univ Hosp, Ctr Hlth Serv Res, Cologne, Germany