Barbarito, N., A. Vaghi, and E. De Mattia. “Prevalence of Airflow Obstruction According GOLD, ATS and ERS Criteria in Symptomatic Ever-Smokers Referring to a Pulmonary Rehabilitation Department”. Monaldi Archives for Chest Disease 75, no. 3 (December 10, 2015). Accessed October 9, 2024. https://www.monaldi-archives.org/macd/article/view/215.