1. Department of Orthopaedics and Rehabilitation, Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Avenue, Box 665, Rochester, NY 14642, USA.
2. Department of Pathology and Laboratory Medicine, Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY 14642, USA.
3. Department of Biomedical Engineering, Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY 14642, USA.