Independent Predictors for Early and Midterm Mortality after Thoracic Surgery - Chamogeorgakis, T; Anagnostopoulos, C E; Connery, C P; Ashton, R C; Dosios, T; Kostopanagiotou, G; Rokkas, C K; Toumpoulis, I K (The Thoracic and Cardiovascular Surgeon, 2007)