IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-1-33110 Original Research Paper COMPARISON OF EFFECTIVENESS AMONG ONDANSETRON, PALONOSETRON AND GRANISETRON IN PREVENTING POSTOPERATIVE NAUSEA AND VOMITING FOLLOWING LAPAROSCOPIC CHOLECYSTECTOMY Amrit Ghosh Dr. Dr. Sujan Sarkar Dr. Dr. Debarshi Jana Dr. January 2021 10 1 01 02