@misc{indiciaef3c85fce4dd6,
  title = {Clinical research designs: quantitative studies.},
  author = {Nancy M Heddle},
  year = {2002},
  doi = {10.1111/j.1423-0410.2002.tb05312.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/12617147/},
  note = {Source identifier: 12617147}
}