@misc{indiciaef4b9e87e887f,
  title = {Primary hyperparathyroidism and peptic ulcer.},
  author = {B M Black},
  year = {1971},
  doi = {10.1016/s0039-6109(16)39491-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/4939432/},
  note = {Source identifier: 4939432}
}