[1] Karl Landsteiner Univ Hlth Sci, Krems, Austria
[2] Univ Hosp Krems, Dept Internal Med 2, Div Palliat Care, Mitterweg 10, A-3500 Krems An Der Donau, Austria
[3] Med Univ Vienna, Ctr Publ Hlth, Dept Social & Prevent Med, Publ Mental Hlth Res Unit, Vienna, Austria
[4] Austrian Assoc Palliat Care, Vienna, Austria
[5] Med Univ Vienna, Dept Internal Med 1, Clin Div Palliat Med, Vienna, Austria
[6] Palliat Care Ctr Basel, Basel, Switzerland
[7] Univ Hosp Basel, Dept Clin Res, Basel, Switzerland
[8] Univ Basel, Basel, Switzerland
[9] Hosp Horn, Dept Anesthesiol, Horn, Austria