1 Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna/General Hospital of Vienna, Vienna, Austria; Christian Doppler Laboratory for Medical Radiation Research for Radiation Oncology, Medical University of Vienna, Vienna, Austria.
2 Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna/General Hospital of Vienna, Vienna, Austria.
3 Department of Psychology, Sigmund Freud Private University Vienna, Vienna, Austria.
4 Department of Anaesthesia, General Intensive Care and Pain Management, Medical University of Vienna/General Hospital of Vienna, Vienna, Austria.
5 Department of Clinical Oncology, Leiden University Medical Center, Leiden, The Netherlands.