@misc{indiciae8ee2c4c8d41f,
  title = {Circulating proinsulin-like material in patients with functioning insulinomas.},
  author = {R A Gutman and N R Lazarus and J C Penhos and S Fajans and L Recant},
  year = {1971},
  doi = {10.1056/nejm197105062841803},
  url = {https://pubmed.ncbi.nlm.nih.gov/4324225/},
  note = {Source identifier: 4324225}
}