@article{anna appefgren1998p-associated,
  title={Substance P-Associated Increase of Intra-articular Temperature and Pain Threshold in the Arthritic TMJ},
  author={anna appefgren,björn appelgren,sigvard kopp,thomas lundeberg,elvartheodorsson},
  journal={Journal of Oral & Facial Pain and Headache},
  volume={12},
  number={2},
  pages={101--107},
  doi = {10.11607/jofph.12101},
  year={1998}
}