Chandan Sahu, Ruchi Singh. Comparison of Propofol-Ketamine, Propofol-Fentanyl and Propofol-Lidocaine for Sedation During Upper Gastrointestinal Endoscopy: A Prospective Randomised Comparative Study. J Popl Ther Clin Pharmacol. 2024;31(10):1014-1020. doi:10.69980/4ezr5f41