@article{karin p. oomen2012of,
  title={Effects of Radiofrequency Thermocoagulation of the Sphenopalatine Ganglion on Headache and Facial Pain: Correlation with Diagnosis},
  author={karin p. oomen,albert j. van wijck,gerrit j. hordijk,jacob a. de ru},
  journal={Journal of Oral & Facial Pain and Headache},
  volume={26},
  number={1},
  pages={59--64},
  doi = {10.11607/jofph.2659},
  year={2012}
}