Chandan Sahu and Ruchi Singh (2024) “Comparison of Propofol-Ketamine, Propofol-Fentanyl and Propofol-Lidocaine for Sedation During Upper Gastrointestinal Endoscopy: A Prospective Randomised Comparative Study”, Journal of Population Therapeutics and Clinical Pharmacology, 31(10), pp. 1014–1020. doi:10.69980/4ezr5f41.