RT Journal Article SR Electronic T1 The authors’ reply JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1456 OP 1456 DO 10.1136/hrt.2009.175430 VO 95 IS 17 A1 R K Riezebos A1 G J Laarman A1 J G P Tijssen YR 2009 UL http://heart.bmj.com/content/95/17/1456.abstract AB