@misc{indiciaefbb217b53922,
  title = {Letter: Scale-markers for microscopical illustrations.},
  author = {M D Maser},
  year = {1975},
  doi = {10.1056/nejm197501092920226},
  url = {https://pubmed.ncbi.nlm.nih.gov/1109437/},
  note = {Source identifier: 1109437}
}