1. Joint Program in Biomedical Engineering, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas; and University of Texas at Arlington, Arlington, Texas
2. Joint Program in Biomedical Engineering, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas; and University of Texas at Arlington, Arlington, Texas
3. TissueGen, Arlington, Texas
4. TissueGen, Arlington, Texas; Department of Physiology, and Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, Kentucky