Kallie Stapleton1, Matthew Jefkins2, Christopher Grant3, J Gordon Boyd4. 1. Department of Critical Care, Queen's University, Kingston, ON, Canada. 15kjs2@queensu.ca. 2. Department of Internal Medicine, Kingston, ON, Canada. 3. Division of Physical Medicine and Rehabilitation, University of Calgary, Calgary, AB, Canada. 4. Department of Critical Care Medicine, Department of Neurology, Queen's University, Kingston, ON, Canada.