MINIELLO, S., M. TESTINI, G. PICCINNI, D. D’ABBICCO, M. AMORUSO, G. CRISTALLO, and G.M. BONOMO. 2003. “THE ROLE OF PALLIATION IN PERIAMPULLAR CANCERS OF GERIATRIC AGE”. Annali Italiani Di Chirurgia 74 (3):251-54. https://annaliitalianidichirurgia.it/index.php/aic/article/view/2758.