Kannan, Santhana, Sudhakar Marri, and Subash Sivasubramaniam. “USG for Brachial Plexus Block”. Anaesthesia, Pain & Intensive Care (January 27, 2019): 333-340. Accessed April 4, 2025. https://apicareonline.com/index.php/APIC/article/view/364.