@misc{indiciae8268749c1e9f,
  title = {Detecting effect modification due to the variables controlled in multiple matching.},
  author = {A Ejigou and R McHugh},
  year = {1985},
  doi = {10.1016/0021-9681(85)90117-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/4031001/},
  note = {Source identifier: 4031001}
}