Thoracoscopy in diagnosis and treatment of mediastinal tumors - Milanez, J. R. C.; Cirino, Luis Marcelo Inaco; Fernandez, A.; Filomeno, Luiz Tarcísio Brito; Xavier, A. M.; Jatene, Fábio Biscegli (World Congress of the World Society of Cardio-Thoracic Surgeons, 1999)