Postoperative Heparin-Mediated Extracorporeal Low-Density Lipoprotein Fibrinogen Precipitation Aphaeresis Prevents Early Graft Occlusion after Coronary Artery Bypass Grafting oleh Martin Oberhoffer, Sandra Eifert, Beate Jaeger, Frithjof Blessing, A. Beiras-Fernandez, D. Seidel, B. Reichart