Ricci, Claudio, Francesco Monari, Salvatore Buscemi, Marielda D’Ambra, Davide Campana, Riccardo Panzacchi, Claudio Ceccarelli, et al. “Lymph Node Ratio As a Prognostic Factor in Patients With Pancreatic Endocrine Tumours”. JOP. Journal of the Pancreas 13, no. 5S (September 20, 2012): 635. Accessed April 20, 2025. https://serena.sharepress.it/index.php/jop/article/view/1009.