@misc{indiciae3acc97140e15,
  title = {Pneumococcal vaccine.},
  author = {G A Bruyn},
  year = {1990},
  doi = {10.1016/0140-6736(90)93088-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/1972475/},
  note = {Source identifier: 1972475}
}