RT Journal Article SR Electronic T1 14 This abstract has been withdrawn JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP A12 OP A13 DO 10.1136/heartjnl-2019-BSCMR.14 VO 105 IS Suppl 3 YR 2019 UL http://heart.bmj.com/content/105/Suppl_3/A12.abstract AB