1. College of Medicine at University Park The Pennsylvania State University College of Medicine University Park Pennsylvania USA
2. College of Medicine at Hershey The Pennsylvania State University College of Medicine Hershey Pennsylvania USA
3. Brain Injury Research Center TIRR Memorial Hermann Houston Texas USA
4. Department of Physical Medicine & Rehabilitation UT Health Sciences Center at Houston Houston Texas USA
5. Department of Physical Medicine & Rehabilitation UT Southwestern Medical Center Dallas Texas USA
6. Department of Physical Medicine and Rehabilitation The Pennsylvania State University College of Medicine, Penn State Health Milton S. Hershey Medical Center Hershey Pennsylvania USA