Accademic Hospital, Dept. of Oncology, Uppsala, Sweden
University Hospital, Dept. of Oncology, Oslo, Norway
Skåne University Hospital, Dept. of Oncology, Lund, Sweden
Department of Oncology, Lund University Hospital, Lund, Sweden
Sahlgrenska University Hospital, Department of Oncology, Göteborg, Sweden
Lund University Hospital, Lund, Sweden
ENT Department, Lund University Hospital, Lund, Sweden
University Hospital, Linköping, Sweden
County Hospital, Kalmar, Sweden
County Hospital Ryhov, Jönköping, Sweden
Department of Neurosurgery, Lund, Sweden
Lund University Hospital, Lund, Sweden
Karolinska University Hospital, Stockholm, Sweden
Akademiska Sjukhuset, Uppsala, Sweden
Centralsjukhuset, Dept of Oncology, Karlstad, Sweden
University Hospital of Stavanger, Department of Haematology and Oncology, Stavanger, Norway
Helsinki University Central Hospital, Helsinki, Finland
Ulleval University Hospital, Department of Oncology, Oslo, Norway