RT Journal Article SR Electronic T1 Age-related reduction of myocardial metabolic efficiency: Is it time to routinely measure myocardial metabolism to monitor cardiac health? JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 88 OP 89 DO 10.1136/heartjnl-2017-311729 VO 104 IS 2 A1 Fragasso, Gabriele YR 2018 UL http://heart.bmj.com/content/104/2/88.abstract AB