The appearance of S‐100 protein in serum during and immediately after cardiopulmonary bypass surgery: a possible marker for cerebral injury. - Blomquist,S.; Johnsson,P.; Luhrs,C.; Malmkvist,G.; Solem,J.O.; Alling,C.; Stahl,E. (J Cardiothorac Vasc Anesth, 1997)