@article{george a. zarb1999disorders:,
  title={Temporomandibular Disorders: Osteoarthritis},
  author={george a. zarb,gunnar e. carlsson},
  journal={Journal of Oral & Facial Pain and Headache},
  volume={13},
  number={4},
  pages={295--306},
  doi = {10.11607/jofph.13295},
  year={1999}
}