Mascarenhas-Saraiva, Miguel José, et al. “The Use of a PEG Ascorbate Booster Following Standard Bowel Preparation Improves Visualization for Capsule Endoscopy in a Randomized, Controlled Study”. Turkish Journal of Gastroenterology, vol. 32, no. 5, Jan. 2021, pp. 437-42, doi:10.5152/tjg.2021.20279.