@misc{indiciae0cfbe09f9d18,
  title = {Software for optimal matching in observational studies.},
  author = {E J Bergstralh and J L Kosanke and S J Jacobsen},
  year = {1996},
  url = {https://pubmed.ncbi.nlm.nih.gov/8728456/},
  note = {Source identifier: 8728456}
}