1. Department of Orthopedic Surgery, University of Southern California, Los Angeles, California, USA.
2. Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, California, USA.
3. USC Molecular Imaging Center, Los Angeles, California, USA.
4. Orthopaedic Institute for Children, J. Vernon Luck. Sr., Orthopedic Research Center, Los Angeles, California, USA.
5. Department of Molecular & Medical Pharmacology, University of California Los Angeles David Geffen School of Medicine, Los Angeles, California, USA.
6. Eli & Edythe Broad Center for Regenerative Medicine & Stem Cell Research, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA.