1. Department of Pharmacology and Chemical Biology (D.B.D.), University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, 15261
2. Department of Physical Medicine and Rehabilitation (G.S.), and Ferguson Laboratory for Orthopaedic Research, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, 15261
3. Department of Orthopaedics (G.S.), University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, 15261