@misc{indiciae09485cfd9c8c,
  title = {Induced sputum examination.},
  author = {F E Hargreave and E Pizzichini and M Pizzichini},
  year = {1998},
  doi = {10.1016/s0091-6749(98)70370-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/9564818/},
  note = {Source identifier: 9564818}
}