Rajkumar Rajendram1, G Abbas Kharal2, Rishi Puri3. 1. Department of Medicine, King Abdulaziz Medical City, PO Box 22490, Riyadh 11426, Kingdom of Saudi Arabia. Electronic address: rajkumarrajendram@doctors.org.uk. 2. Department of Neurology, Cleveland Clinic Foundation, Cleveland, Ohio. 3. Department of Cardiovascular Medicine, Cleveland Clinic Foundation, Cleveland, Ohio.