1. Department of Radiation Oncology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
2. Department of Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
3. Department of GI Surgery, Ghent University Hospital, Ghent, Belgium
4. Department of Radiology and Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
5. Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
6. Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
7. Department of Mechanical Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD, USA
8. Department of Materials Science and Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD, USA
9. Department of Diagnostic and Interventional Radiology, Faculty of Medicine, University Hospital of Cologne, University of Cologne, Cologne, Germany
10. Department of Physics, The Institute of Cancer Research, London, UK
11. Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Berlin, Germany