@misc{indiciaecd916e790a9d,
  title = {Pepsinogen and Pepsin.},
  author = {J N Langley and J S Edkins},
  year = {1886},
  doi = {10.1113/jphysiol.1886.sp000233},
  url = {https://pubmed.ncbi.nlm.nih.gov/16991445/},
  note = {Source identifier: 16991445}
}