1. Lewis Katz School of Medicine, Temple University, 3500 N Broad St, Philadelphia, PA 19140
2. Center for Global and Population Health Research in Radiology, Department of Radiology, Perelman School of Medicine Hospital of the University of Pennsylvania, Philadelphia, PA
3. Department of Radiology, Perelman School of Medicine Hospital of the University of Pennsylvania, 3400 Spruce Street. Philadelphia, PA. 19104