Ozay, Batuhan, Murat Sargin, Gunseli Abay, Bulend Ketenci, Sinan Kut, Yavuz Enc, Gokcen Orhan, Onder Teskin, and Murat Demirtas. 2008. “The Severity of Positional Mitral Regurgitation During Off-Pump Coronary Artery Bypass Grafting”. The Heart Surgery Forum 11 (3):E145-E151. https://doi.org/10.1532/HSF98.20071191.