Becaldo, C., Kuan, A., & Ong, L. (2020). The diagnostic accuracy of papanicolau staining in brush biopsy as an alternative to tissue biopsy in patients undergoing colonoscopy for non-obstructing colonic tumors at Vicente Sotto Memorial Medical Center from February 2016 to September 2017: A prospective study. Philippine Journal of Gastroenterology, 9(1). Retrieved from https://philjgastro.com/index.php/pjg/article/view/3