Retrospective analysis of leg ulcers cases at the university hospital, Faculty of Medicine of Ribeirão Preto, University of São Paulo (1991-2001) - Barbetta, F. M.; Mazzucato, E. L.; Salathiel, A. M.; Foss, Norma Tiraboschi; Frade, Marco Andrey Cipriani (Medicina Cutânea Ibero Americana, 2009)