@article {panagiotakos2006increased,
	title = {Increased fitness levels attenuates the 28-day risk of cardiovascular events in middle-aged men and women who underwent open-heart surgery},
	journal = {European Journal of Cardiovascular Prevention \& Rehabilitation},
	volume = {13},
	year = {2006},
	author = {Panagiotakos, Demosthenes and Vassilaki, Olga and Manginas, Athanasios and Alivizatos, Peter and Cokkinos, Dennis}
}
