Pietro Achilli, Marco Chiarelli, Ugo Giustizieri, Morena Burati, Fulvio Tagliabue, Matteo Maternini, Sabina Terragn, and Angelo Guttadauro. 2012. “Spontaneous Rupture of a Non-Functioning Pancreatic Neuroendocrine Tumor A Case Report of a Rare Cause of Acute Abdomen”. Annali Italiani Di Chirurgia 91 (1):88-92. https://annaliitalianidichirurgia.it/index.php/aic/article/view/186.