@misc{indiciaef79645988ca4,
  title = {Answer please. Spondylolysis.},
  author = {R Hines and W A Grana},
  year = {1987},
  doi = {10.3928/0147-7447-19871001-19},
  url = {https://pubmed.ncbi.nlm.nih.gov/2960961/},
  note = {Source identifier: 2960961}
}