GCG and heart failure: We included all perticipants from the Functional Impact of GLP-1 for Heart Failure Treatmen (FIGHT) [7] and Effect of Liraglutide on Left Ventricular Function in Stable Chronic Heart Failure Patients with and without Diabetes (LIVE) [8] trials, which are multicentre, double-blind, randomised, placebo-controlled clinical trial.