Symbols to be used in labelling of medical devices. World Journal of Current Medical and Pharmaceutical Research, India, v. 4, n. 3, p. 40–44, 2022. DOI: 10.37022/wjcmpr.v4i3.214. Disponível em: https://www.wjcmpr.org/index.php/journal/article/view/214. Acesso em: 13 oct. 2025.