1 Department of Biomedical Physiology and Kinesiology, Simon Fraser University, 8888 University Drive, Burnaby, BC, Canada.
2 University of British Columbia, ALS Clinic, GF Strong Hospital, Vancouver, BC, Canada.
3 Neuromuscular Diseases Unit (VHHSC).
4 Department of Medicine (Neurology), Henri M. Toupin Chair in Neurological Sciences, Neuroscience and Mental Health Institute (NMHI), University of Alberta, Edmonton, AB, Canada.