Pancreatic Gastrinoma, Gastrointestinal Stromal Tumor (GIST), Pheochromocytoma, and Hürthle Cell Neoplasm in a Patient with Neurofibromatosis Type 1: A Case Report and Literature Review. - Arif AA; Kim PTW; Melck A; Churg A; Schwartz Z; Stuart HC (The American journal of case reports, 2021)