1. Departments of Physical Medicine and Rehabilitation, Pediatrics, Public Health & Preventive Medicine, SUNY Upstate Medical University, Norton College of Medicine, Syracuse, NY, USA
2. Department of Physical Medicine and Rehabilitation, Rutgers New Jersey Medical School, Newark, NJ, USA
3. Department of Physical Medicine & Rehabilitation, University of Texas Southwestern Medical Center, Dallas, TX, USA
4. Mount Washington Pediatric Hospital, An Affiliate of The University of Maryland System and Johns Hopkins Medical Institution, Baltimore, MD, USA