@misc{indiciae943661b7b802,
  title = {Unnecessary stratification/pairing can never increase efficiency--a mathematical proof.},
  author = {B G Choi},
  year = {1984},
  doi = {10.1093/ije/13.1.116},
  url = {https://pubmed.ncbi.nlm.nih.gov/6698696/},
  note = {Source identifier: 6698696}
}