@misc{indiciae71b6a7e557c5,
  title = {Serum group I pepsinogens.},
  author = {H L Waldum and P G Burhol},
  year = {1981},
  doi = {10.3109/00365528109181996},
  url = {https://pubmed.ncbi.nlm.nih.gov/7323680/},
  note = {Source identifier: 7323680}
}