[1] Inst Qual & Efficiency Hlth Care IQWiG, D-50670 Cologne, Germany
[2] Univ Med Ctr Freiburg, Dept Palliat Care, Freiburg, Germany
[3] Univ Bremen, Inst Publ Hlth & Nursing Res IPP, D-28359 Bremen, Germany
[4] Univ Hosp Cologne, Dept Palliat Med, Cologne, Germany