Pestei, Seyed Khalil, Amirhossein Orandi, Negar Eftekhar, Amir Pooya Zanjani, Hamid Reza Amiri, and Mohammad Abedi Firuzjaee. 2019. “Comparison of the Effect of Propofol Plus IV Lidocaine Versus Propofol Plus Topical Lidocaine Spray on Decreasing Gag Reflex in Upper GI Endoscopy: A Clinical Trial”. Archives of Anesthesiology and Critical Care 6 (1), 27-32. https://doi.org/10.18502/aacc.v6i1.2046.