Thoracic Epidural Anesthesia and Blood Glucose Levels in Diabetic Patients Undergoing Cardiopulmonary Bypass Under Insulin Infusion According to the Portland Protocol - Sener, M.; Caliskan, E.; Bozdogan, N.; Kocum, A.; Oner, S. O.; Atalay, H.; Kayhan, Z. (Experimental and Clinical Endocrinology & Diabetes, 2010)