Ng, MD, FRCA, A., A. Swami, FFARCSI, G. Smith, MD, FRCA, and J. Emembolu, FRCOG. “Early Analgesic Effects of Intravenous Parecoxib and Rectal Diclofenac Following Laparoscopic Sterilization: A Double-Blind, Double-Dummy Randomized Controlled Trial”. Journal of Opioid Management, vol. 4, no. 1, Jan. 2018, pp. 49-53, doi:10.5055/jom.2008.0008.