Louise Knauber, Department of Medicine, Faculdades Pequeno Príncipe, Curitiba, Brazil Rubia N. Alves-Ramos, Department of Medicine, Faculdades Pequeno Príncipe, Curitiba, Brazil Melyssa Grignet-Ribeiro, Department of Pathology, Hospital Erasto Gaertner, Curitiba, Brazil Dirceu E. Teixeira-Pinto, Department of Surgical Oncology, Hospital Ônix, Curitiba, Brazil Eduardo Morais-de Castro, Department of Medicine, Faculdades Pequeno Príncipe, Curitiba, Brazil