[1] Univ Childrens Hosp, Palliat Care Team Children, Giessen, Hessen, Germany
[2] Univ Childrens Hosp Giessen, Dept Pediat Oncol, Giessen, Hessen, Germany
[3] Univ Hosp, Dept Anesthesiol, Operat Intens Care Med & Pain Therapy, Giessen, Hessen, Germany
[4] Univ Technol, Inst Sociol, Chemnitz, Germany
[5] Cleveland Clin, Dept Oncol, Pediat Oncol, Cleveland Hts, OH USA
[6] Univ Hosp Giessen, Palliat Care Team Adults, Giessen, Hessen, Germany