Influence of the postoperative inflammatory response on cognitive decline in elderly patients undergoing on-pump cardiac surgery: a controlled, prospective observational study oleh Endre Nemeth, Katalin Vig, Kristof Racz, Kinga B. Koritsanszky, Klara I. Ronkay, Fumiko P. Hamvas, Csaba Borbély, Ajandek Eory, Bela Merkely, Janos Gal