[1] Univ Penn, Sch Dent Med, Dept Basic & Translat Sci, Philadelphia, PA 19104 USA
[2] Johns Hopkins Univ, Sch Med, Dept Orthopaed Surg, Baltimore, MD 21205 USA
[3] Univ Penn, Ctr Innovat & Precis Dent, Sch Dent Med, Sch Engn & Appl Sci, Philadelphia, PA 19104 USA
[4] Univ Penn, Penn Ctr Musculoskeletal Disorders, Sch Med, Philadelphia, PA 19104 USA