Hernández-Ruiz A, Ortega HJ, Aguirre-Acevedo DC. Usefulness of spirometry in hospitalized patients with Chronic Obstructive Pulmonary Disease (COPD) exacerbated. Iatreia [Internet]. 2020 Apr. 8 [cited 2025 Feb. 8];33(4):341-7. Available from: https://revistas.udea.edu.co/index.php/iatreia/article/view/339541