IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-14-12-67356 Original Research Paper Ultrasound-Guided Erector Spinae Plane Block For Postoperative Analgesia In Laparoscopic Cholecystectomy: A Prospective Observational Study Shahistha Sultana T.P Dr. December 2025 14 12 01 02