@misc{indiciae885021a87061,
  title = {Caffeine and chronic back pain.},
  author = {J M McPartland and J A Mitchell},
  year = {1997},
  doi = {10.1016/s0003-9993(97)90011-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/9014959/},
  note = {Source identifier: 9014959}
}