J. Watcharotayangul, N. Rattanachaya, and T. Thamjamrassri, “Prevention of Propofol Injection Pain: A Comparison of Lidocaine Pretreatment and Lidocaine Pretreatment with the Diluted Propofol with Dextrose Water”, Thai J Anesthesiol, vol. 47, no. 1, pp. 45–50, Nov. 2020.