Standard Operating Procedure (SOP): the starting point for quality research - the reality of Alessandria. Working Paper of Public Health, [S. l.], v. 9, n. 1, 2021. DOI: 10.4081/wpph.2021.9449. Disponível em: https://journals.pagepress.net/wpph/article/view/9449. Acesso em: 23 apr. 2026.