@misc{indiciaebe52c29b311b,
  title = {Relation between experimental and non-experimental study designs. HB vaccines: a case study.},
  author = {T Jefferson and V Demicheli},
  year = {1999},
  doi = {10.1136/jech.53.1.51},
  url = {https://pubmed.ncbi.nlm.nih.gov/10326054/},
  note = {Source identifier: 10326054}
}