@misc{indiciae05410e4db167,
  title = {Observational studies and randomized trials.},
  author = {R Kunz and K S Khan and H H Neumayer},
  year = {2000},
  doi = {10.1056/nejm200010193431613},
  url = {https://pubmed.ncbi.nlm.nih.gov/11041757/},
  note = {Source identifier: 11041757}
}