@misc{indiciae1852d002d85b,
  title = {Sputum screening by Nomarski interference contrast microscopy.},
  author = {D F Welch and M T Kelly},
  year = {1979},
  doi = {10.1128/jcm.9.4.520-524.1979},
  url = {https://pubmed.ncbi.nlm.nih.gov/88462/},
  note = {Source identifier: 88462}
}