1. Interactive Graphics Systems Group (GRIS) Technische Universität Darmstadt, Germany
2. Clinic and Policlinic for Orthopedics and Orthopedic Surgery, Universitätsmedizin Mainz, Germany
3. Dept. Cognitive Computing & Medical Imaging, Fraunhofer IGD, Darmstadt, Germany
4. Institute for Diagnostic and Interventional Radiology, Goethe University, Frankfurt/M., Germany