Perioperative assessment of cardiac energy metabolism by means of arterio-coronary venous difference in lactate concentration (acDL). - Wollert H-G,null.; Müller W,null.; Fischer D,null.; Wollert U,null.; Panzner R,null.; Schubert F,null.; Krause E-G,null. (Eur. J. Cardio-thorac. Surg., 1990)