Standardization of the ultrasound for catheterism in brazilian Sistema Único de Saúde (SUS): recommendation of cost-effectiveness analysis. Research, Society and Development, [S. l.], v. 9, n. 7, p. e861974910, 2020. DOI: 10.33448/rsd-v9i7.4910. Disponível em: https://www.rsdjournal.org/rsd/article/view/4910. Acesso em: 5 dec. 2025.