@article{eva wolf2008chronic,
  title={Nonspecific Chronic Orofacial Pain: Studying Patient Experiences and Perspectives with a Qualitative Approach},
  author={eva wolf,pirjo birgerstam,maria nilner,kerstin petersson},
  journal={Journal of Oral & Facial Pain and Headache},
  volume={22},
  number={4},
  pages={349--358},
  doi = {10.11607/jofph.22.4.09},
  year={2008}
}