@article{reyes enciso2018of,
  title={Efficacy of Electrical Stimulation of the Occipital Nerve in Intractable Primary Headache Disorders: A Systematic Review with Meta-Analyses},
  author={robert t. cadalso,john daugherty,caron holmes,saravanan ram,reyes enciso},
  journal={Journal of Oral & Facial Pain and Headache},
  volume={32},
  number={1},
  pages={40--52},
  doi = {10.11607/ofph.1784},
  year={2018}
}