“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 June 12, 2025. https://www.monaldi-archives.org/macd/article/view/215.