Vologzhanina, L. G., and I. V. Petukhova. “The Problems of Delayed Diagnostics of Neuroendocrine Tumors of the Gastrointestinal Tract and Pancreas (clinical Case)”. Herald of Pancreatic Club 40, no. 3 (September 6, 2018): 46-49. Accessed June 24, 2026. https://vkp.org.ua/index.php/journal/article/view/113.