Mehri Najafi, et al. “Comparison of One and Two-Day Bowel Preparation With Polyethylene Glycol in Pediatric Colonoscopy”. Turkish Journal of Gastroenterology, vol. 26, no. 3, July 2019, pp. 232-5, https://tjg.avesjournals.com/index.php/tjg/article/view/3137.