1. F. Ambrosio, PT, PhD, MPT, is Director, Cellular Rehabilitation Laboratory, W1453 Biomedical Science Tower, 200 Lothrop St, Pittsburgh, PA 15213 (USA), and Assistant Professor, Departments of Physical Medicine and Rehabilitation, Physical Therapy, and Orthopedic Surgery and McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.
2. S.L. Wolf, PT, PhD, FAPTA, FAHA, is Professor, Division of Physical Therapy, Department of Rehabilitation Medicine, Emory University, Atlanta, Georgia.
3. A. Delitto, PT, PhD, FAPTA, is Professor and Chair, Department of Physical Therapy, University of Pittsburgh.
4. G.K. Fitzgerald, PT, PhD, OCS, FAPTA, is Associate Professor, Department of Physical Therapy, University of Pittsburgh.
5. S.F. Badylak, DVM, PhD, MD, is Professor, McGowan Institute for Regenerative Medicine and Department of Surgery, University of Pittsburgh.
6. M.L. Boninger, MD, is Professor and Chair, Department of Physical Medicine and Rehabilitation and McGowan Institute for Regenerative Medicine, University of Pittsburgh.
7. A.J. Russell, PhD, is Distinguished Professor, McGowan Institute for Regenerative Medicine and Department of Surgery, University of Pittsburgh.