@misc{indiciae709c3c7134fe,
  title = {Internet versus mailed questionnaires: a randomized comparison.},
  author = {Philip Ritter and Kate Lorig and Diana Laurent and Katy Matthews},
  year = {2004},
  doi = {10.2196/jmir.6.3.e29},
  url = {https://pubmed.ncbi.nlm.nih.gov/15471755/},
  note = {Source identifier: 15471755}
}