P.04.17 EFFECTS OF LOW-DOSES ASPIRIN ON CLINICAL OUTCOME AND DISEASE PROGRESSION IN PATIENTS WITH GASTRO-ENTERO-PANCREATIC NEUROENDOCRINE TUMORS: RESULTS OF A MULTICENTRIC RETROSPECTIVE STUDY. Issue 2 (15th March 2018) - Massironi, S.; Pusceddu, S.; Cavalcoli, F.; Zilli, A.; Tamagno, G.; Femia, D.; Prinzi, N.; Ciafardini, C.; Conte, D.