Toilet training: an observational study in a sample of healthy children between 18 and 42 months old. Portuguese Journal of Family Medicine and General Practice, [S. l.], v. 31, n. 2, p. 105–15, 2015. DOI: 10.32385/rpmgf.v31i2.11465. Disponível em: https://rpmgf.pt/ojs/index.php/rpmgf/article/view/11465. Acesso em: 18 apr. 2026.