@misc{indiciae427573075592,
  title = {Estimating treatment effects using observational data.},
  author = {Ralph B D'Agostino},
  year = {2007},
  doi = {10.1001/jama.297.3.314},
  url = {https://pubmed.ncbi.nlm.nih.gov/17227985/},
  note = {Source identifier: 17227985}
}