1. From the Department of Pathology, University of Verona, Verona, Italy (Drs Zamboni, Capelli, Scarpa, and Brunello); the Department of Pathology, Sacro Cuore Don Calabria, Negrar, Italy (Drs Zamboni, Bogina, and Pesci); and the Department of Pathology, University of Kiel, Kiel, Germany (Dr Klöppel)