Ultrasound-guided and Peripheral Nerve Stimulator-guided Interscalene Brachial Plexus Block in a Patient with Neurofibromatosis during the COVID-19 Pandemic. Acta Med Philipp [Internet]. 2022 Oct. 12 [cited 2025 Apr. 9];56(18). Available from: https://actamedicaphilippina.upm.edu.ph/index.php/acta/article/view/5668