@misc{indiciaea1cf85322b7c,
  title = {Penicillin and working capacity.},
  author = {C Furberg and T Ringquist},
  year = {1967},
  doi = {10.1016/s0140-6736(67)90473-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/4164175/},
  note = {Source identifier: 4164175}
}