@misc{indiciae7d920cd513b4,
  title = {Differing results for efficacy--sampling bias or purposive sampling?},
  author = {Francesco Mercorio},
  year = {2003},
  doi = {10.1016/s0015-0282(03)02196-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/14607605/},
  note = {Source identifier: 14607605}
}