@misc{indiciaef5dc780c4a62,
  title = {Factor structure of common drug usage.},
  author = {N L Pedersen and G E McClearn},
  year = {1983},
  doi = {10.1016/0376-8716(83)90058-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/6641502/},
  note = {Source identifier: 6641502}
}