Schermer, T.R.J., C.G.J. Saris, W.J.H.M. Van den Bosch, N.H. Chavannes, C.P. Van Schayck, P.N.R. Dekhuijzen, and C. Van Weel. “Exacerbations and Associated Healthcare Cost in Patients With COPD in General Practice”. Monaldi Archives for Chest Disease 65, no. 3 (February 11, 2016). Accessed April 29, 2024. https://www.monaldi-archives.org/macd/article/view/558.