1 Center for Biomedical Image Computing and Analytics, Richards Medical Research Laboratories, University of Pennsylvania, Philadelphia, PA, USA. sbakas@upenn.edu.
2 Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA. sbakas@upenn.edu.
3 Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA. sbakas@upenn.edu.
4 Center for Biomedical Image Computing and Analytics, Richards Medical Research Laboratories, University of Pennsylvania, Philadelphia, PA, USA. feldmanm@mail.med.upenn.edu.
5 Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA. feldmanm@mail.med.upenn.edu.