Boffin, N., V. Van der Stighelen, D. Paulus, and P. Van Royen. “Use of Office Spirometers in Flemish General Practice: Results of a Telephone Survey”. Monaldi Archives for Chest Disease 65, no. 3 (February 11, 2016). Accessed April 30, 2024. https://www.monaldi-archives.org/macd/article/view/557.