1. Department of Radiation Oncology KSA-KSB, Kantonsspital Aarau, Aarau, Switzerland
2. Animal Production and Health Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Department of Nuclear Sciences and Applications, International Atomic Energy Agency (IAEA), Vienna, Austria
3. Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
4. Department of Radiation Oncology, University Hospital Zurich, Switzerland