Spirometry for the diagnosis of airway obstruction in patients with risk factors for COPD: the GOLD and lower limit of normal criteria
Monica Grafino1, Filipa Todo-Bom1, Ana Cristina Lutas1, Jorge Cabral2, Marco Pereira1, João Valença1, Sofia Tello Furtado1
DOI: 10.36416/1806-3756/e20210124