Preexisting Atrial Fibrillation as Predictor for Late-Time Mortality in Patients with End-Stage Renal Disease Undergoing Cardiac Surgery - A Multicenter Study - Schönburg, M; Ziegelhoeffer, T; Weinbrenner, F; Bechtel, M; Detter, C; Krabatsch, T; Osswald, B; Riess, F C; Scholz, F; Stamm, C; Sievers, H H; Bartels, C (The Thoracic and Cardiovascular Surgeon, 2008)