Regional Citrate Anticoagulation for Continuous Renal Replacement Therapy in Critically Ill Patients after Cardiac Surgery—A safe Option? - Leistner, M.; Asch, S.; Ort, K.; Waghefi, A.; Danner, B.; Baraki, H.; Kutschka, I.; Niehaus, H. (The Thoracic and Cardiovascular Surgeon, 2019)