Mehrvarzfar, P., Poorhashemi, A., Khodaei, F., Bohlouli, B., Sarkarat, F., Kalantar Motamedi, M., Layegh Nejad, M. K. and Zamaheni, S. (2014) “The Effect of Adding Fentanyl to Epinephrine-Containing Lidocaine on the Anesthesia of Maxillary Teeth with Irreversible Pulpitis: A Randomized Clinical Trial”, Iranian Endodontic Journal, 9(4), pp. 290–294. doi: 10.22037/iej.v9i4.5855.