RT Journal Article SR Electronic T1 Reaching the wrong conclusion: residual confounding by indication JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 701 OP 701 DO 10.1136/heartjnl-2017-312446 VO 104 IS 8 A1 Jonathan A Batty A1 Alistair S Hall YR 2018 UL http://heart.bmj.com/content/104/8/701.abstract AB