1. Departments of Neurobiology, Physiology, and Behavior and Physical Medicine and Rehabilitation, University of California, Davis, CA, USA
2. Shirley Ryan AbilityLab and Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL, USA
3. Department of Orthopaedic Surgery, University of California San Diego, La Jolla, CA, USA
4. Department of Biology, University of California San Diego, La Jolla, CA, USA
5. Department of Orthopaedics, Rady Children’s Hospital, San Diego, CA, USA
6. Research Service, Hines V.A. Medical Center, Maywood, IL, USA