1. Department of Radiation Sciences/Oncology, Umeå University , Umeå , Sweden
2. Regional Cancer Centre Stockholm Gotland , Stockholm , Sweden
3. Department of Nursing, Umeå University , Sweden
4. Department of Neurobiology, Caring Sciences and Society, Karolinska Institutet , Stockholm , Sweden
5. Department of Physiology and Pharmacology, Karolinska Institutet , Stockholm , Sweden