Singh, R.; Chandra, A.; Kumari, M.; Rajkumar, S. Comparative Evaluation of Preoperative Administration of Single Dose Intravenous Paracetamol or Intravenous Diclofenac for Management of Postoperative Pain in Laparoscopic Cholecystectomy. Int. J. Heal. Clin. Res. 2021, 4, 16-21.