@article{christian s. stohler2000pain,
  title={Generic Pain Intensity Scores Are Affected by Painful Comorbidity},
  author={jens c. türp,charles j. kowalski,christian s. stohler},
  journal={Journal of Oral & Facial Pain and Headache},
  volume={14},
  number={1},
  pages={47--51},
  doi = {10.11607/jofph.1447},
  year={2000}
}