PT - JOURNAL ARTICLE AU - Marsh, S. AU - Aldington, S. AU - Shirtcliffe, P. AU - Weatherall, M. AU - Beasley, R. TI - Smoking and COPD: what really are the risks? AID - 10.1183/09031936.06.00074806 DP - 2006 Oct 01 TA - European Respiratory Journal PG - 883--884 VI - 28 IP - 4 4099 - http://erj.ersjournals.com/content/28/4/883.short 4100 - http://erj.ersjournals.com/content/28/4/883.full SO - Eur Respir J2006 Oct 01; 28