1. Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, 800 Howard Ave., New Haven, CT 06510, USA.
2. Department of Microbial Pathogenesis, Yale School of Medicine, 295 Congress Ave., New Haven, CT 06536, USA.
3. Department of Orthopedics Surgery, Columbia University, New York, NY 10032, USA.
4. Department of Biomedical Engineering, Yale University, New Haven, CT 06520, USA.
5. Department of Pathology, Yale School of Medicine, New Haven, CT 06520, USA.