RT Journal Article SR Electronic T1 Do beta-blockers and inhibitors of the renin–angiotensin aldosterone system improve outcomes in patients with heart failure and left ventricular ejection fraction >40%? JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1533 OP 1535 DO 10.1136/heartjnl-2018-313855 VO 105 IS 20 A1 R Thomas Lumbers A1 Nicole Martin A1 Karthick Manoharan A1 James Thomas A1 L Ceri Davies YR 2019 UL http://heart.bmj.com/content/105/20/1533.abstract AB