1. Department of Radiology, Division of Musculoskeletal Imaging and Intervention, University of Washington, Seattle, WA 98195, USA
2. Department of Biomedical Informatics and Medical Education, University of Washington, Seattle, WA 98195, USA
3. Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064, USA
4. Department of Radiology, Papa Giovanni XXIII Hospital, 24127 Bergamo, Italy
5. School of Medicine, University Milano Bicocca, 20126 Milan, Italy