1. Rehabilitation Engineering and Applied Research Laboratory, The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
2. Shepherd Center, Atlanta, Georgia, USA
3. Quantum Rehab, Duryea, Pennsylvania, USA
4. Rehabilitation Engineering and Applied Research Laboratory, College of Design and The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA