Hassani V, Rahimzadeh A, Nikoubakht N, Sayarifard A, Latifi K. The Effect of Remifentanil– Propofol Compared with Fentanyl– Propofol on Urine Output in Patients Undergoing Lumbar Posterior Spinal Fusion. Arch Anesth & Crit Care. 2016;2(2):175-178.