Shevchenko, N. A., and L. S. Babinets. “The Effectiveness of Systemic Enzyme Therapy in Complex Treatment Chronic Pancreatitis in Old Age”. Journal of Education, Health and Sport 11, no. 6 (June 30, 2021): 209–216. Accessed March 29, 2024. https://apcz.umk.pl/JEHS/article/view/JEHS.2021.11.06.023.