@article{thomas volk2021(patient,
  title={PROMs (Patient Reported Outcome Measures) after surgery for patients with chronic pain},
  author={thomas volk},
  journal={Signa Vitae},
  volume={17},
  number={S1},
  pages={59--59},
  doi = {10.22514/sv.2021.202},
  year={2021}
}