RT Journal Article SR Electronic T1 Radiation exposure in invasive cardiology JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 667 OP 674 DO 10.1136/hrt.2007.125021 VO 94 IS 5 A1 Eberhard Kuon YR 2008 UL http://heart.bmj.com/content/94/5/667.abstract AB