@misc{indiciaea23fdbaf2542,
  title = {Multicenter clinical trials: methodological aspects.},
  author = {T A Ban and W H Wilson},
  year = {1981},
  doi = {10.1159/000401352},
  url = {https://pubmed.ncbi.nlm.nih.gov/7322136/},
  note = {Source identifier: 7322136}
}