@misc{indiciae3c575ffb671c,
  title = {The Campbell Collaboration--C2.},
  author = {Jim Thornton},
  year = {2003},
  doi = {10.1111/j.1471-0528.2003.03010.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/14511959/},
  note = {Source identifier: 14511959}
}