@misc{indiciae512c16e4d854,
  title = {Improving the response rates to questionnaires.},
  author = {Liam Smeeth and Astrid E Fletcher},
  year = {2002},
  doi = {10.1136/bmj.324.7347.1168},
  url = {https://pubmed.ncbi.nlm.nih.gov/12016167/},
  note = {Source identifier: 12016167}
}