@article{akbas_gunduz_sanli_yegin_2016,  title={Sphenopalatine ganglion pulsed radiofrequency treatment in patients suffering from chronic face and head pain},  volume={66},  ISSN={0034-7094},  url={https://doi.org/10.1016/j.bjane.2014.06.001},  DOI={10.1016/j.bjane.2014.06.001},  number={1},  journal={Revista Brasileira de Anestesiologia},  publisher={Sociedade Brasileira de Anestesiologia},  author={Akbas, Mert and Gunduz, Emel and Sanli, Suat and Yegin, Arif},  year={2016},  month={Jan},  pages={50–54} }