RT Journal Article SR Electronic T1 Lipoprotein levels and the progression of aortic valvular disease JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 938 OP 938 VO 95 IS 11 A1 O C Yontar A1 M B Yilmaz YR 2009 UL http://heart.bmj.com/content/95/11/938.1.abstract AB