@misc{indiciae1d10112e3a77,
  title = {Cumulative load as a risk factor for back pain.},
  author = {S Kumar},
  year = {1990},
  doi = {10.1097/00007632-199012000-00014},
  url = {https://pubmed.ncbi.nlm.nih.gov/2149209/},
  note = {Source identifier: 2149209}
}