@misc{indiciae11ceff2cf4e0,
  title = {Combination vaccines.},
  author = {R W Ellis and R G Douglas},
  year = {1994},
  doi = {10.1017/s0266462300014112},
  url = {https://pubmed.ncbi.nlm.nih.gov/8157451/},
  note = {Source identifier: 8157451}
}