London, Ont.; University of Toronto, 2006; diagnostic radiology. Died Aug. 11, 2017, following a motor-vehicle accident, aged 39. Survived by his wife, Elizabeth Teasell, and 3 children. "Mark was assistant professor of medicine/radiology, Western University, and key interventional chest radiologist at Victoria Hospital, London Health Sciences Centre. Mark worked to save many other people's lives, and showed humility and supported his fellow man. His wishes were respected through the Gift of Life organ donor program, so that others might benefit." Western University's Schulich School of Medicine & Dentistry observed: "Dr. Landis was a highly respected diagnostic radiologist, teacher, mentor and friend to many colleagues. He is remembered as being brilliant, reflective, warm and witty, and at the beginning of a distinguished career in patient care."