Trushil G Shah1, Jaini M Sutaria2, Manav V Vyas3. 1. Division of Pulmonary and Critical Care Medicine, The University of Texas Southwestern, Dallas, Texas, USA. 2. Parkland Health and Hospital System, Department of Internal Medicine, The University of Texas Southwestern, Dallas, Texas, USA. 3. Division of Neurology, Department of Medicine, University of Toronto, Toronto, Ontario, Canada. Electronic address: manav.vyas@mail.utoronto.ca.