1. Department of Imaging (MRU), Imperial College of Science, Technology and Medicine (NHLI), Royal Brompton Hospital, London SW3 6NP, UK
2. Department of Radiology, Barts and The London NHS Trust, Royal London Hospital, Whitechapel, London E1 1BB, UK
3. Institute for Systems Dynamics, University of Stuttgart, 70569 Stuttgart, Germany
4. Instituto Universitario de Automática e Informática Industrial, Universidad Politécnica de Valencia, 46022 Valencia, Spain
5. Campus Vaihingen, University of Stuttgart, 70569 Stuttgart, Germany
6. Department of Informatics and Medical Technology, Faculty of Health Sciences, Semmelweis University, Budapest 1088, Hungary