Nagar, Sachin, Naresh Paliwal, Robin Lohia, Vivek Saluja, and Narender Dutt. “Comparative Study of Two Thoracic Segmental Spinal Anaesthesia Techniques for Laparoscopic Cholecystectomy: Low-Dose Hypobaric Ropivacaine and Isobaric Ropivacaine at T10-11 Intervertebral Space Vs. Standard Technique Using Isobaric Levo Bupivacaine at T8-T10 Intervertebral Space”. International Journal of Clinical Trials 11, no. 1 (January 24, 2024): 17–23. Accessed April 21, 2026. https://www.ijclinicaltrials.com/index.php/ijct/article/view/752.