@misc{indiciae524fb6a41706,
  title = {Barium studies in the aged.},
  author = {A N EXTON-SMITH and G OSBORNE},
  year = {1961},
  doi = {10.1136/bmj.1.5242.1799},
  url = {https://pubmed.ncbi.nlm.nih.gov/13697704/},
  note = {Source identifier: 13697704}
}