Effect of intermittent fasting after ST-elevation myocardial infarction on left ventricular function: study protocol of a pilot randomised controlled trial (INTERFAST-MI) oleh Jan-Marcus Daniel, Jochen Dutzmann, Kai Knöpp, Zoe Kefalianakis, Hubert Gufler, Walter Wohlgemuth, Florian Kahles, Daniel G Sedding