Ekaterina Yu. Plotnikova, et al. “Russian Consensus on Exo- and Endocrine Pancreatic Insufficiency After Surgical Treatment”. Turkish Journal of Gastroenterology, vol. 32, no. 3, Mar. 2021, pp. 225-39, https://tjg.avesjournals.com/index.php/tjg/article/view/4045.