@misc{indiciae6e35f4d8aa4a,
  title = {Methods of data collection.},
  author = {M E Megel and J A Heermann},
  year = {1994},
  doi = {10.1097/00006527-199406000-00014},
  url = {https://pubmed.ncbi.nlm.nih.gov/7831403/},
  note = {Source identifier: 7831403}
}