@misc{indiciae2bdd99adfb32,
  title = {Letter: Ethambutol and the eye; zinc and copper.},
  author = {I A Campbell and P C Elmes},
  year = {1975},
  doi = {10.1016/s0140-6736(75)90812-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/52087/},
  note = {Source identifier: 52087}
}