1. Department of Pulmonology, Hospital Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Brasil
2. Department of Thoracic Radiology, Hospital Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Brasil
3. Department of Thoracic Surgery, Hospital Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Brasil
4. Department of Pathology, Hospital Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Brasil