*Department of Surgery, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD†Department of Surgery, The Pancreas Institute, Verona, Italy‡Department of Oncology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD§Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD¶Department of Diagnostics and Public Health, Section of Pathology, University and Hospital Trust of Verona, Verona, Italy||Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands**Department of Pathology, Pederzoli Hospital, Peschiera, Italy††Department of Surgery, Pederzoli Hospital, Peschiera, Italy‡‡ARC-Net Applied Research on Cancer Center, University and Hospital Trust of Verona, Verona, Italy.