@misc{indiciaebbe94f553678,
  title = {The evolution of chronic back pain problems: a longitudinal study.},
  author = {H C Philips and L Grant},
  year = {1991},
  doi = {10.1016/0005-7967(91)90127-o},
  url = {https://pubmed.ncbi.nlm.nih.gov/1835836/},
  note = {Source identifier: 1835836}
}