Dr. Jishnu.V,Dr Vinod Kumar Yadav,Dr Leena Goel,Dr Anshul Gaur. A comparative study of local anaesthetic agent levobupivacaine and ropivacaine in ultrasound guided erector spinae plane block in patients undergoing laparoscopic cholecystectomy. IJPRT [Internet]. 2026 Jul. 10 [cited 2026 Aug. 18];16(2):351-64. Available from: https://ijprt.org/index.php/pub/article/view/2298