@misc{indiciae04339371d336,
  title = {Pneumococcal vaccine: time for another controlled trial.},
  author = {F Shann},
  year = {1998},
  doi = {10.1016/s0140-6736(05)77683-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/9620711/},
  note = {Source identifier: 9620711}
}