Anthony M H Ho1, Andrew D Chung2, Glenio B Mizubuti3. 1. Department of Anaesthesiology and Perioperative Medicine, Queen's University, Kingston General Hospital, Kingston, ON, Canada. 2. Department of Radiology, Queen's University, Kingston General Hospital, Kingston, ON, Canada. 3. Department of Anaesthesiology and Perioperative Medicine, Queen's University, Kingston General Hospital, Kingston, ON, Canada. Electronic address: gleniomizubuti@hotmail.com.