Intravenous Granisetron, Ondansetron and Metoclopramide in the Prevention and Treatment of Post Operative Nausea and Vomiting After Laparoscopic Cholecystectomy - A Comparative Study. j Bangladesh Soc Anaesthesiologists 2009, 19 (1), 20-27. https://doi.org/10.3329/jbsa.v19i1.4010.