EFFICACY OF ULTRASOUND-GUIDED BILATERAL ERECTOR SPINAE PLANE BLOCK AS A COMPONENT OF MULTIMODAL ANALGESIA FOR POSTOPERATIVE PAIN CONTROL AFTER LAPAROSCOPIC CHOLECYSTECTOMY: A PROSPECTIVE COMPARATIVE OBSERVATIONAL STUDY AT A TERTIARY CARE HOSPITAL. CDF [Internet]. 2021 Sep. 20 [cited 2026 Jun. 28];51(3):294-30. Available from: https://cuestionesdefisioterapia.com/index.php/es/article/view/4174