1. Department of Medicine, Division of Physical Medicine and Rehabilitation, University of Toronto; Pain Research Institute, Toronto Rehabilitation Institute, University Health Network, 550 University Ave, Toronto, ON M5G 2A2, Canada
2. Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, Italy
3. Department of Neurorehabilitation Sciences, Istituto Auxologico Italiano, IRCCS, Milano, Italy