1. OncoRay – Center for Radiation Research in Oncology, Medical Faculty Carl Gustav Carus, Dresden University of Technology
2. Gastroenterologie, Hepatologie & Endokrinologie Charité, Universitätsmedizin Berlin
3. Department of Radiation Oncology, Medical Faculty Carl Gustav Carus, Dresden University of Technology
4. Department of Radiation Oncology, Klinikum rechts der Isar, Technical University Munich, München, Germany