[1
]
Postgraduate Program of Pulmonology (Federal University of Rio Grande do Sul - UFRGS)
Department of Thoracic Surgery, Laboratory of Airway and Lung, Hospital de Clínicas
de Porto Alegre, Porto Alegre, Brazil.
[2
]
Department of Thoracic Surgery, Laboratory of Airway and Lung, Hospital de Clínicas
de Porto Alegre, Porto Alegre, Brazil.
[3
]
Department of Thoracic Surgery, Laboratory of Airway and Lung, Hospital de Clínicas
de Porto Alegre, Porto Alegre, Brazil cristianofa@gmail.com.