1. Department of Pathology & Laboratory Medicine; University of Pennsylvania Health System; Philadelphia Pennsylvania
2. Department of Pathology & Laboratory Medicine; Geisinger Medical Laboratories; Danville Pennsylvania
3. Department of Radiology, Neuroradiology Division; University of Pennsylvania Health System; Philadelphia Pennsylvania
4. Department of Radiology, Musculoskeletal Radiology Division; University of Pennsylvania Health System; Philadelphia Pennsylvania
5. Department of Orthopaedic Surgery; University of Pennsylvania Health System; Philadelphia Pennsylvania