@misc{indiciae19d7cd5cf4b9,
  title = {Long term sickness certification problems.},
  author = {M H Schwarz},
  year = {1981},
  doi = {10.1177/002581728104900202},
  url = {https://pubmed.ncbi.nlm.nih.gov/6789048/},
  note = {Source identifier: 6789048}
}