Pancreatic neuroendocrine tumors: VIPoma
Perry, RR, Vinik, AI. Clinical review: Diagnosis and management of functioning islet cell tumors. J Clin Endocrinol Metab 1995; 80:2273.
Smith, SL, Branton, SA, Avino, AJ, et al. Vasoactive intestinal polypeptide secreting islet cell tumors: A 15-year experience and review of the literature. Surgery 1998; 124:1050.