[1] Nordland Cty Hosp, Unit Oncol & Palliat Care, Dept Internal Med, Bodo, Norway
[2] Cty Hosp Ostersund, Storsjoglentan, Ostersund, Sweden
[3] Cty Hosp Ostersund, Dept Gen Surg, Ostersund, Sweden
[4] Malmo Univ Hosp, Dept Oto Rhino Laryngol, Malmo, Sweden
[5] Bispebjerg Hosp, Dept Palliat Med, DK-2400 Copenhagen, Denmark
[6] Univ Trondheim Hosp, Trondheim, Norway
[7] Norwegian Univ Sci & Technol, Palliat Med Unit, Dept Radiotherapy & Oncol, Trondheim, Norway
[8] Norwegian Univ Sci & Technol, Unit Appl Clin Res, Trondheim, Norway