@misc{indiciaee8fef11a2b93,
  title = {Hierarchy of methods.},
  author = {J P Vandenbroucke},
  year = {1990},
  doi = {10.1016/0895-4356(90)90170-t},
  url = {https://pubmed.ncbi.nlm.nih.gov/2348215/},
  note = {Source identifier: 2348215}
}