@article {cokkinos2006efficacy,
	title = {Efficacy of antithrombotic therapy in chronic heart failure: the HELAS study},
	journal = {European journal of heart failure},
	volume = {8},
	number = {4},
	year = {2006},
	pages = {428{\textendash}432},
	author = {Cokkinos, Dennis V and Haralabopoulos, George C and Kostis, John B and Toutouzas, Pavlos K and HELAS investigators}
}
