1. Department of Nuclear Medicine, University Hospital of Leipzig, Germany
2. Department of Paediatrics, Martin-Luther-University Halle/Wittenberg, Halle/Saale, Germany
3. Hermes Medical Solutions, Stockholm, Sweden
4. Department of Radiology, Martin-Luther-University Halle/Wittenberg, Halle/Saale, Germany
5. Institute for Medical Informatics, Statistics and Epidemiology (IMISE), University of Leipzig, Germany