1. Department of Radiation Oncology, County Council of Östergötland,
Linköping, Sweden
2. Regional Cancer Centre Southeast, County Council of Östergötland,
Linköping, Sweden
3. Department of Oral and Maxillo-Facial Surgery, Ryhov County Hospital,
Jönköping, Sweden
4. Department of Radiation Oncology, Ryhov County Hospital,
Jönköping, Sweden
5. Department of Medical and Health Sciences, Linköping University,
Linköping, Sweden