@misc{indiciae46b591328762,
  title = {Observational studies for intervention assessment.},
  author = {A Jahn and O Razum},
  year = {2001},
  doi = {10.1016/s0140-6736(00)05218-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/11448009/},
  note = {Source identifier: 11448009}
}