St. Stoyanov, George, Deyan Dzhenkov, and Lilyana Petkova. “Primary Aortoduodenal Fistula: A Rare Cause of Massive Gastrointestinal Hemorrhage”. Autopsy and Case Reports 11 (August 24, 2021): e2021301. Accessed June 4, 2024. https://revistas.usp.br/autopsy/article/view/189953.