@misc{indiciae64ae4e502151,
  title = {Physical activity among Dutch workers--differences between occupations.},
  author = {Karin I Proper and Vincent H Hildebrandt},
  year = {2006},
  doi = {10.1016/j.ypmed.2006.03.017},
  url = {https://pubmed.ncbi.nlm.nih.gov/16684560/},
  note = {Source identifier: 16684560}
}