Pharmacological and toxicological aspects of fentanil: Review and synthesis of evidence. Research, Society and Development, [S. l.], v. 14, n. 4, p. e7614448616, 2025. DOI: 10.33448/rsd-v14i4.48616. Disponível em: https://ojs34.rsdjournal.org/index.php/rsd/article/view/48616. Acesso em: 28 jun. 2025.