1 School of Dentistry, University of California, Los Angeles, CA 90095.
2 Department of Pathology and Laboratory Medicine, David Geffen School of Medicine,University of California, Los Angeles, CA 90095.
3 School of Dentistry, University of California, Los Angeles, CA 90095; Department of Pathology and Laboratory Medicine, David Geffen School of Medicine,University of California, Los Angeles, CA 90095.
5 Orthopedic Hospital Research Center, University of California, Los Angeles, CA 90095; Department of Surgery, University of California, Los Angeles, Los Angeles, CA 90095.
6 Department of Surgery, University of California, Los Angeles, Los Angeles, CA 90095.
7 Orthopedic Hospital Research Center, University of California, Los Angeles, CA 90095; Center for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom.
8 School of Dentistry, University of California, Los Angeles, CA 90095; Department of Pathology and Laboratory Medicine, David Geffen School of Medicine,University of California, Los Angeles, CA 90095; Orthopedic Hospital Research Center, University of California, Los Angeles, CA 90095. Electronic address: [email protected].