1. Department of Physical Therapy, University of Florida, Gainesville, Florida, USA.
2. Department of McKnight Brain Institute, and University of Florida, Gainesville, Florida, USA.
3. Department of Breathing Research and Therapeutics Center, University of Florida, Gainesville, Florida, USA.
4. Department of Pediatrics, University of Florida, Gainesville, Florida, USA.
5. Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, Florida, USA.