David J. Kerr, Professor of Cancer Medicine, Nuffield Division of Clinical Laboratory Sciences, Nuffield Department of Medicine, University of Oxford, Oxford, UK, Honorary Professor of Oncology, Xiamen and 2nd Military Universities, China, Honorary Professor, Seoul National University, Korea, Daniel G. Haller, Professor Emeritus, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA, Cornelis J. H. van de Velde, Professor of Surgery and Head, Department of Surgical Oncology, Leiden University Medical Center, The Netherlands, Michael Baumann, Cancer Research Center (DKFZ), Heidelberg, Germany and Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universitat Dresden, Germany