Buprenorphine as an adjuvant in supraclavicular brachial plexus block. International Journal of Biomedical and Advance Research, [S. l.], v. 3, n. 7, p. 571–575, 2012. DOI: 10.7439/ijbar.v3i7.511. Disponível em: https://ssjournals.co.in/index.php/ijbar/article/view/185. Acesso em: 12 mar. 2026.