1. Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA 15260, USA
2. Department of Epidemiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA 15260, USA
3. Department of Physical Therapy, School of Health and Rehabilitation Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA
4. The Edward S. Rogers Department of Electrical and Computer Engineering, Faculty of Applied Science and Engineering, University of Toronto, Toronto, ON M5S 1A1, Canada
5. Research & Innovation Department, North York General Hospital, Toronto, ON M2K 1E1, Canada