Zeynel Abidin Sayiner, et al. “Relationship Between Pancreas Exocrine Insufficiency and Cardiac Autonomic Neuropathy in Patients With Type 2 Diabetes Mellitus”. Turkish Journal of Gastroenterology, vol. 32, no. 5, May 2021, pp. 481-7, https://tjg.avesjournals.com/index.php/tjg/article/view/4065.