RT Journal Article SR Electronic T1 Polymorphisms in the Type IV Collagen Alpha3 Gene and the Risk of COPD JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society DO 10.1183/09031936.00076207 A1 K.M. Kim A1 S.H. Park A1 J.S. Kim A1 W.K. Lee A1 S.I. Cha A1 C.H. Kim A1 Y.M. Kang A1 T.H. Jung A1 I.S. Kim A1 J.Y. Park YR 2008 UL http://erj.ersjournals.com/content/early/2008/04/02/09031936.00076207.abstract AB