PULLENS, H. J.; JOOSTEN, M.; SIERSEMA, P. D.; BRINK, M. A. Open-Access Flexible Sigmoidoscopy Frequently Leads to Additional Colonoscopy in Symptomatic Patients over 50 years. Journal of Gastrointestinal and Liver Diseases, [S. l.], v. 23, n. 2, p. 153–159, 2014. DOI: 10.15403/jgld.2014.1121.232.1hjmp. Disponível em: https://www.jgld.ro/jgld/index.php/jgld/article/view/1304. Acesso em: 11 aug. 2026.