1. Oxford Stone Group, University of Oxford, Oxford, United Kingdom.
2. Faculty of Medicine, KU Leuven, Leuven, Belgium.
3. Division of Medical Sciences, University of Oxford, Oxford, United Kingdom.
4. Department of Urology and Paediatric Urology, Philipps-Universität Marburg, Marburg, Germany.
5. Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom.
6. Department of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford, United Kingdom.
7. Division of Medicine, Institute of Nuclear Medicine, University College London, London, United Kingdom.