Randomized controlled study between ultrasound versus peripheral nerve stimulator for supraclavicular brachial plexus block. Asian Journal of Pharmaceutical and Health Sciences, [S. l.], v. 9, n. 4, p. 2164–2169, 2019. DOI: 10.5530/nrz3vc98. Disponível em: https://ajphs.com/index.php/ajphs/article/view/194. Acesso em: 23 sep. 2025.