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Cerveri I, Accordini S, Verlato G, Corsico A, Zoia MC, Casali L, Burney P, de Marco R; European Community Respiratory Health Survey (ECRHS) Study Group. Variations in the prevalence across countries of chronic bronchitis and smoking habits in young adults. Eur Respir J. 2001 Jul;18(1):85–92. doi: 10.1183/09031936.01.00087101. PMID: 11510810. |