@misc{indiciaec8fa03459134,
  title = {Choline esters in tissue extracts.},
  author = {H C Chang and J H Gaddum},
  year = {1933},
  doi = {10.1113/jphysiol.1933.sp003049},
  url = {https://pubmed.ncbi.nlm.nih.gov/16994462/},
  note = {Source identifier: 16994462}
}