1. University Medical Center Mannhein, Institute for Clinical Radiology and Nuclear Medicine, Mannheim, Germany
2. Department for Radiology, Universitätsmedizin Göttingen, Georg-August-Universität, Göttingen, Germany
3. Department for Clinical Radiology, Universitätsklinikum Münster, Westfälische Wilhelms Universität, Münster, Germany
4. Department for Radiology, Martin-Luther-Universität Halle-Wittenberg, Halle, Germany