Tsymbal OI, Boyko SM. A Case of Duodenal Bleeding in a One-Year-Old Child in the Early Postoperative Period after the Surgical Correction of Congenital Heart Defect. ujcvs [Internet]. 2023Sep.28 [cited 2024May19];31(3):139-42. Available from: http://cvs.org.ua/index.php/ujcvs/article/view/592