1. Division of Thoracic Surgery, Department of Surgery, Botucatu School of Medicine, São Paulo State University, UNESP, São Paulo, Brazil
2. Post-Graduation Program on Medicine, Department of Surgery, Botucatu School of Medicine, São Paulo State University, UNESP, São Paulo, Brazil
3. Post-Graduation Program on General Basis of Surgery, Department of Surgery, Botucatu School of Medicine, São Paulo State University, UNESP, São Paulo, Brazil
4. Department of Surgery, Mogi das Cruzes University, São Paulo, Brazil
5. Department of Surgery, Botucatu School of Medicine, São Paulo State University, UNESP, São Paulo, Brazil