1. College of Osteopathic Medicine, University of New England, Biddeford, ME, USA
2. Department of Physical Medicine and Rehabilitation, The University of Michigan, Ann Arbor, MI, USA
3. Department of Orthopedic Surgery, The University of Michigan, Ann Arbor, MI, USA
4. Department of Pathology, The University of Michigan, Ann Arbor, MI, USA
5. Department of Radiology, The University of Michigan, Ann Arbor, MI, USA