Ali, M. Y.; Uddin, R.; Islam, A.; Kamal, M.; Islam, S. R.; Rahman, A. S. Post Operative Nausea and Vomiting After Laparoscopic Cholecystectomy: Comparison of Prophylactic Effect of Dexamethasone With Ondansetron. j Bangladesh Soc Anaesthesiologists 2014, 24, 60-64.