Combined Perioperative Infusion of Nifedipine and Metoprolol Provides Antiischemic and Antiarrhythmic Protection in Patients Undergoing Elective Aortocoronary Bypass Surgery - Podesser, B; Schwarzacher, S; Zwölfer, W; Binder, T M; Spatt, J; Peschl, F; Huber, S; Seitelberger, R (The Thoracic and Cardiovascular Surgeon, 1993)