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 (Dr. Nagarjuna Gaddam1* & Dr. P. Prudhvi Chandra2 , Trans.). (2021). Cuestiones De Fisioterapia, 51(3), 294-304. https://doi.org/10.48047/px58ny68