A.Christopher, Natta Sumathi, and T.Vinodh Kumar, “Evaluation of oral olanzapine versus oral ondansetron in prevention of postoperative nausea and vomiting in patients undergoing laparoscopic surgeries under general anesthesia: A comparative study”, Int. J. Heal. Clin. Res., vol. 5, no. 1, pp. 641–651, Jan. 2022.