Bolanaki, Helen, Alexandra Giatromanolaki, Efthimios Sivridis, and Anastasios Karayiannakis. “Primary Squamous Cell Carcinoma of the Ampulla of Vater”. JOP. Journal of the Pancreas 15, no. 1 (January 10, 2014): 42-45. Accessed April 27, 2024. http://www.serena.unina.it/index.php/jop/article/view/1649.