@misc{indiciae235779ad3f6d,
  title = {Variance components and their implications for statistical information in medical data.},
  author = {E J Orav and T A Louis and R H Palmer and E A Wright},
  year = {1991},
  doi = {10.1002/sim.4780100411},
  url = {https://pubmed.ncbi.nlm.nih.gov/2057658/},
  note = {Source identifier: 2057658}
}