RT Journal Article SR Electronic T1 Coronary pressure measurements: catheter induced errors JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 644 OP 645 DO 10.1136/hrt.82.5.644a VO 82 IS 5 A1 POULLIS, M YR 1999 UL http://heart.bmj.com/content/82/5/644.2.abstract AB