Does Cardiopulmonary Bypass Alter Plasma Level of Tumor Markers? CA 125 and Carcinoembryonic Antigen - Battaloglu, B; Kaya, E; Erdil, N; Nisanoglu, V; Kosar, F; Ozgur, B; Yıldırım, B; Karagoz, H (The Thoracic and Cardiovascular Surgeon, 2002)