Khanykin, Boris, Rizwan Siddiqi, Per F. Jensen, Dennis R. Bigler, and Gennady V. Atroshchenko. 2013. “Comparison of Remifentanil and Low-Dose Fentanyl for Fast-Track Cardiac Anesthesia: A Prospective Randomized Study”. The Heart Surgery Forum 16 (6):E324-E328. https://doi.org/10.1532/HSF98.2013229.