@misc{indiciae251afb937b55,
  title = {Metformin and B-12 malabsorption.},
  author = {V Herbert},
  year = {1972},
  doi = {10.7326/0003-4819-76-1-140},
  url = {https://pubmed.ncbi.nlm.nih.gov/5021544/},
  note = {Source identifier: 5021544}
}