@misc{indiciaeeed3357f0dee,
  title = {Mailed questionnaires: length matters.},
  author = {Phil Edwards},
  year = {2004},
  doi = {10.1093/pubmed/fdh135},
  url = {https://pubmed.ncbi.nlm.nih.gov/15284329/},
  note = {Source identifier: 15284329}
}