Cokkinos DV, Haralabopoulos GC, Kostis JB, Toutouzas PK; HELAS Investigators. Efficacy of antithrombotic therapy in chronic heart failure: the HELAS study. Eur J Heart Fail. 2006;8:428 432. doi: 10.1016/j. 526. Homma S, Thompson JL, Pullicino PM, Levin B, Freudenberger RS, Teerlink JR,AmmonSE,GrahamS,SaccoRL,MannDL,etal;WARCEFInvestigators. Warfarin and aspirin in patients with heart failure and sinus rhythm. N Engl J Med. 2012;366:1859 1869. doi: 10.1056/NEJMoa1202299 527. Massie BM, Collins JF, Ammon SE, Armstrong PW, Cleland JG, Ezekowitz M, Jafri SM, Krol WF, O Connor CM, Schulman KA, et al; WATCH Trial Investigators. Randomized trial of warfarin, aspirin, and clopidogrel in pa- tients with chronic heart failure: the Warfarin and Antiplatelet Therapy in Chronic Heart Failure (WATCH) trial. Circulation. 2009;119:1616 1624. 528. Zannad F, Anker SD, Byra WM, Cleland JGF, Fu M, Gheorghiade M, Lam CSP, Mehra MR, Neaton JD, Nessel CC, et al; COMMANDER HF Investigators. Rivaroxaban in patients with heart failure, sinus rhythm, and coronary disease. N Engl J Med. 2018;379:1332 1342. doi: 529. Andreas M, Moayedifar R, Wieselthaler G, Wolzt M, Riebandt J, Haberl T, Angleitner P, Schloglhofer T, Wiedemann D, Schima H, et al. Increased thromboembolic events with dabigatran compared with vi- tamin K antagonism in left ventricular assist device patients: a ran- domized controlled pilot trial. Circ Heart Fail. 2017;10:e003709. doi: 530. Wada H, Yasu T, Sakakura K, Hayakawa Y, Ishida T, Kobayashi N, Kubo N, Ako J, Momomura S. Contrast echocardiography for the diagnosis of CLINICAL STATEMENTS AND GUIDELINES Kleindorfer left ventricular thrombus in anterior myocardial infarction. Heart Vessels. 531. Meurin P, Brandao Carreira V, Dumaine R, Shqueir A, Milleron O, Safar B, Perna S, Smadja C, Genest M, Garot J, et al; College National des Cardiologues Fran ais; Coll ge National des Cardiologues des H pitaux Fran ais, Paris, France. 