@misc{indiciae345959821a5c,
  title = {Penicillin-resistant Streptococcus viridans.},
  author = {C A Berntsen},
  year = {1979},
  doi = {10.1056/nejm197907053010122},
  url = {https://pubmed.ncbi.nlm.nih.gov/255771/},
  note = {Source identifier: 255771}
}