1. Carolinas Rehabilitation, Carolinas Medical Center, Department of Physical Medicine & Rehabilitation, 1100 Blythe Blvd, Charlotte, NC 28203, USA.
2. Carolinas Medical Center, Department of Neurology, Center for Parkinson’s Disease & Movement Disorders & Carolinas Neuromuscular/ALS-MDA Center, 1010 Edgehill Rd North, Charlotte, NC 28207, USA