@misc{indiciae89acb1aca086,
  title = {Involutional diabetic retinopathy.},
  author = {W J Ramsay and R C Ramsay and R L Purple and W H Knobloch},
  year = {1977},
  doi = {10.1016/0002-9394(77)90509-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/304310/},
  note = {Source identifier: 304310}
}