[1] North Zealand Hosp, Dept Oncol & Palliat Care, Dyrehavevej 29, DK-3400 Hillerod, Denmark
[2] Copenhagen Univ Hosp, Dept Oncol, Sect Palliat Med, Rigshosp, Copenhagen, Denmark
[3] North Zealand Hosp, Dept Cardiol, Hillerod, Denmark
[4] Univ Southern Denmark, Natl Inst Publ Hlth, Copenhagen, Denmark
[5] Copenhagen Univ Hosp, Rigshosp, Multidisciplinary Pain Ctr, Dept Anaesthesiol,Pain & Resp Support, Copenhagen, Denmark
[6] Univ Copenhagen, Dept Clin Med, Copenhagen, Denmark
[7] Odense Univ Hosp, Dept Cardiol, Odense, Denmark