Haotian Wang1, R Zachary Ford2, Andrew D Milne2,3. 1. Department of Anesthesia, Pain Management and Perioperative Medicine, Dalhousie University, Halifax, NS, Canada. Haotian.Wang@dal.ca. 2. Department of Anesthesia, Pain Management and Perioperative Medicine, Dalhousie University, Halifax, NS, Canada. 3. School of Biomedical Engineering, Dalhousie University, Halifax, NS, Canada.