@article {cokkinos1976alternation,
	title = {Alternation of left ventricular performance with electrical alternans},
	journal = {Chest},
	volume = {69},
	number = {6},
	year = {1976},
	pages = {797{\textendash}799},
	publisher = {Elsevier},
	author = {Cokkinos, Dennis V and Demopoulos, John N and Heimonas, Ilias T and Voridis, Eutychios M}
}
