RT Journal Article SR Electronic T1 Socioeconomic status, asthma and chronic bronchitis in a large community-based study JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society DO 10.1183/09031936.00101606 A1 L. Ellison-Loschmann A1 J. Sunyer A1 E. Plana A1 N. Pearce A1 J-P. Zock A1 D. Jarvis A1 C. Janson A1 J.M. Antó A1 M. Kogevinas A1 the European Community Respiratory Health Survey YR 2007 UL http://erj.ersjournals.com/content/early/2007/01/10/09031936.00101606.abstract AB