@misc{indiciae2da83989cbed,
  title = {Work overseas after retirement.},
  author = {D J Martin},
  year = {1970},
  doi = {10.1136/bmj.1.5694.503-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/5435177/},
  note = {Source identifier: 5435177}
}