IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-5-49308 Original Research Paper Comparative Study Of Efficacy Of Ondansetron Versus Ondansetron And Dexamethasone Combination In Preventing Postoperative Nausea And Vomiting After Laparoscopic Cholecystectomy Aparajita Singh Dr. Dr. P. N. Agarwal Dr. Dr. Vishwendra Singh Dr. May 2023 12 5 01 02