CHRIST, M. Pain – the fifth vital sign. Swiss Medical Weekly, [S. l.], v. 150, n. 1718, p. w20215, 2020. DOI: 10.4414/smw.2020.20215. Disponível em: https://smw.ch/index.php/smw/article/view/2779. Acesso em: 28 mar. 2024.