iOrthobiologix, Charlotte, North Carolina, USA. Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University Health System, Richmond, Virginia, USA. Spinal Cord Injury and Disorders Service, Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond, Virginia, USA. American Cancer Society, Atlanta, GA, USA. Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University, St. Louis, Missouri, USA. Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia, USA. Department of Radiology, Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond, Virginia, USA. Department or Pathology, Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond, Virginia, USA.