@misc{indiciae167897a3f150,
  title = {A mycobacteriology proficiency testing program using simulated sputum specimens.},
  author = {H Gruft and A Loder and M Osterhout},
  year = {1976},
  url = {https://pubmed.ncbi.nlm.nih.gov/819397/},
  note = {Source identifier: 819397}
}