1. Department of Surgery and Anatomy, Ribeirão Preto School of Medicine, University of São Paulo, Av. Bandeirantes, 3900 - Monte Alegre - CEP: 14049-900 Ribeirão Preto/SP, Brazil
2. Department of Surgery and Anatomy (Division of Cardiothoracic Surgery); Department of Medicine (Division of Cardiology); Ribeirão Preto School of Medicine, University of São Paulo, SP, Brazil