Comparative Evaluation of the Analgesic Efficacy of Transverses Abdominis Plane Block by Using Levobupivacaine and Levobupivacaine With Magnesium Sulfate in Patients Undergoing Laparoscopic Cholecystectomy Surgery Journal title: Scholars Journal of Applied Medical Sciences Authors: Dr. Prativa Panda, Dr. Khageswar Raut, Dr. Debasish Debata, Dr. Devishree Das, Dr. Soumyakant Mallic... Subject(s):