@article {karagiannis2006intermittent,
	title = {Intermittent acute aortic valve regurgitation: a case report of a prosthetic valve dysfunction},
	journal = {European Journal of Echocardiography},
	volume = {9},
	number = {2},
	year = {2006},
	pages = {291{\textendash}293},
	publisher = {Oxford University Press},
	author = {Karagiannis, Stefanos E and Karatasakis, George and Spargias, Konstantinos and Louka, L and Poldermans, Don and Cokkinos, D.V.}
}
