1. James Homer Wright Pathology Laboratories; Department of Orthopaedics; Massachusetts General Hospital and Harvard Medical School; Boston MA USA
2. Division of Musculoskeletal Imaging and Intervention; Department of Radiology; Department of Orthopaedics; Massachusetts General Hospital and Harvard Medical School; Boston MA USA
3. Orthopaedic Spine Center and Orthopaedic Oncology Service; Department of Orthopaedics; Massachusetts General Hospital and Harvard Medical School; Boston MA USA
4. Department of Pathology; University of Miami Miller School of Medicine; Miami FL USA