1 From Department of Radiology, Kings College Hospital, London, United Kingdom (D.J.Q.); and Population Health Research Institute, Hamilton Health Sciences and Department of Medicine, McMaster University, Ontario, Canada (J.W.E., R.G.H.). dan.quinlan@nhs.net.
2 From Department of Radiology, Kings College Hospital, London, United Kingdom (D.J.Q.); and Population Health Research Institute, Hamilton Health Sciences and Department of Medicine, McMaster University, Ontario, Canada (J.W.E., R.G.H.).