Kestenberg, Abraham, and James Becker. “Gastrocolic Fistula. A Rare Sequela of Benign Peptic Ulcer. Report of Two Cases”. Colombia Medica 21, no. 1 (March 31, 1990): 30–33. Accessed November 22, 2024. https://colombiamedica.univalle.edu.co/index.php/comedica/article/view/6281.