@misc{indiciaedbefc02b8642,
  title = {Physiotherapy exercises and back pain.},
  author = {B Koes and L Bouter and H Beckerman and G van der Heijden and P Knipschild},
  year = {1991},
  doi = {10.1136/bmj.303.6806.853},
  url = {https://pubmed.ncbi.nlm.nih.gov/1834289/},
  note = {Source identifier: 1834289}
}