[1] Lund Univ, Dept Clin Sci, Lund, Sweden
[2] Malmo Univ, Fac Hlth & Soc, Malmo, Sweden
[3] NTNU, Pain & Palliat Res Grp, Dept Canc Res & Mol Med, Trondheim, Norway
[4] Innlandet Hosp, Dept Internal Med Gjovik, Canc Unit, Gjovik, Norway
[5] Univ Oslo, Rikshosp, Norwegian Radium Hosp, Univ Hosp,Dept Oncol, N-0027 Oslo, Norway
[6] Univ Trondheim Hosp, Dept Radiotherapy & Oncol, Palliat Med Unit, Trondheim, Norway
[7] Malmo Univ Hosp, Dept Otorhinolaryngol, S-20502 Malmo, Sweden