<prompt> Most common neuroendocrine tumour of pancreas isInsulinomaGastrinomaNon-functional tumoursVIPoma  <response>: TumourIncidenceInsulinoma70-80Gastrinoma20-25Non-functional tumours30-50VIPoma4Glucagonoma4Somatostatinoma5Carcinoid1ACTHoma1GRFoma1Ref: Bailey and Love 27e pg: 846 