1. Department of Medical Imaging, The University of Arizona Health Network, Tucson, Arizona.
2. Department of Radiology, University of Crete, Heraklion, Greece.
3. Department of Medical Imaging, University Hospital, Heraklion, Greece.
4. Department of Imaging and Interventional Radiology, Prince of Wales Hospital, Shatin, New Territories, Hong Kong.
5. Department of Orthopaedic Surgery, The University of Arizona Health Network, Tucson, Arizona.