Ribeiro, Soraia, Carlos Seiça Cardoso, Margarida Valério, João Machado, José Costa, Cidália Rodrigues, and Alexandre Rebelo-Marques. 2022. “Confirmatory Evaluation of the Modified Medical Research Council Questionnaire for Assessment of Dyspnea in Patients With Chronic Obstructive Pulmonary Disease in Portugal”. Acta Médica Portuguesa 35 (2). Lisbon, Portugal:89-93. https://doi.org/10.20344/amp.15208.