@misc{indiciae3cb372560dfb,
  title = {Microbial challenge studies--a challenge worth accepting.},
  author = {Tom Jefferson},
  doi = {10.1016/s0140-6736(05)67079-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/16099277/},
  note = {Source identifier: 16099277}
}