R. van Buul A, J. Kasteleyn M, Poberezhets V, N. Bonten T, de Mutsert R, S. Hiemstra P, et al. Factors associated with physical activity among COPD patients with mild or moderate airflow obstruction . Monaldi Arch Chest Dis [Internet]. 2021 Sep. 14 [cited 2024 Nov. 22];92(1). Available from: https://www.monaldi-archives.org/macd/article/view/1891