@misc{indiciae3231e7cae86e,
  title = {Control of study variables.},
  author = {P N Arnold},
  year = {1994},
  doi = {10.1016/s0886-3350(13)80674-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/7837091/},
  note = {Source identifier: 7837091}
}