1. Department of Radiology, University Hospital, LMU Munich, München, Germany

2. Clinic of Radiology, University Hospital Muenster, Muenster, Germany

3. Clinic and Policlinic of Radiology, Martin-Luther University Halle-Wittenberg, Halle (Saale), Germany

4. Division of Hand, Plastic and Aesthetic Surgery, University Hospital, LMU Munich, Germany