@article{malin emberg 1999allodynia,,
  title={Pain, Allodynia, and Serum Serotonin Level in Orofacial Pain of Muscular Origin},
  author={malin emberg ,britt hedenberg-magnusson,per alstergren,thomas lundeberg,sigvard kopp},
  journal={Journal of Oral & Facial Pain and Headache},
  volume={13},
  number={1},
  pages={56--62},
  doi = {10.11607/jofph.1356},
  year={1999}
}