D. Cano, W. Otero, M. Gómez, and H. Marulanda, “Comparative prevalence of adenomatous polyps in people aged 45 to 49 years and in people over 50 years of age in a Colombian population: a case-control study”, Rev Gastroenterol Peru, vol. 41, no. 3, pp. 150–155, Sep. 2021.