Gangadharaiah, R.; Devika Rani, D.; Venkatesh, N.; Nithish, S.; Nethra, S. S. Efficacy of Ultrasound Guided Bilateral Erector Spinae Block for Postoperative Analgesia in Patients Undergoing Laparoscopic Cholecystectomy under General Anaesthesia – A Randomised Control Study. kaj 2021, 17, 13-21.