@misc{indiciae801643836ca6,
  title = {Measuring physical activity with a single question.},
  author = {K B Schechtman and B Barzilai and K Rost and E B Fisher},
  year = {1991},
  doi = {10.2105/ajph.81.6.771},
  url = {https://pubmed.ncbi.nlm.nih.gov/2029054/},
  note = {Source identifier: 2029054}
}