@misc{indiciae1f69d23ba0a0,
  title = {A method to obtain a randomized control group where it seems impossible. A case study in program evaluation.},
  author = {S H Zhu},
  year = {1999},
  doi = {10.1177/0193841x9902300401},
  url = {https://pubmed.ncbi.nlm.nih.gov/10558391/},
  note = {Source identifier: 10558391}
}