A rare case of intramural duodenal duplication in a 9-year-old boy (V. Nansenova, T. Georgiev, E. Rangelov, I. Vasilevski, V. Strahinova, E. Kostova, G. Garvanska, B. Mladenov, P. Hristova, D. Kofinova, & H. Shivachev , Trans.). (2026). Bulgarian Medical Journal, 20(1), 61-64. https://journals.mu-sofia.bg/index.php/bmj/article/view/803