@article{sonia sharma2021of,
  title={Prevalence of Facial Pain and Headache in Sweden},
  author={sonia sharma,anna lövgren,sigvard åkerman,peter m. nilsson,björn axtelius,thomas list,birgitta häggman henrikson},
  journal={Journal of Oral & Facial Pain and Headache},
  volume={35},
  number={2},
  pages={139--149},
  doi = {10.11607/ofph.2645},
  year={2021}
}