Aslam, Hafiz M Gastrointestinal Neuroendocrine Tumor, Colon Adenocarcinoma, and Hyperparathyroidism: An Unorthodox Synchronism. [electronic resource] - Cureus Dec 2018 - e3731 p. digital Publication Type: Case Reports; Journal Article ISSN: 2168-8184 Standard No.: 10.7759/cureus.3731 doi