title: Proinsulin levels and insulinomas.
authors.forename: F J
authors.initials: FJ
authors.lastname: Service
mesh_terms: D007516:Adenoma, Islet Cell; D015415:Biomarkers / Q000097:blood*; D006801:Humans; D007340:Insulinoma / Q000097:blood / Q000175:diagnosis*; D010190:Pancreatic Neoplasms / Q000097:blood / Q000175:diagnosis*; D011384:Proinsulin / Q000097:blood*
chemical_list: D015415:Biomarkers; D011384:Proinsulin