A Risk Score to Predict 30-Day Mortality in Patients with Intra-Aortic Balloon Pump Implantation - Saeed, D; El-Banayosy, A; Zittermann, A; Fritzsche, D; Mirow, N; Morshuis, M; Koerfer, R (The Thoracic and Cardiovascular Surgeon, 2007)