TY - JOUR IS - 1 JA - Braz J Anesthesiol JO - Brazilian Journal of Anesthesiology PY - 2016 VL - 66 AU - Akbas M AU - Gunduz E AU - Sanli S AU - Yegin A DO - 10.1016/j.bjane.2014.06.001 LA - en N1 - FEMU ID: 28638; EMF-Portal URL: https://www.emf-portal.org/en/article/28638 SP - 50-54 TI - Sphenopalatine ganglion pulsed radiofrequency treatment in patients suffering from chronic face and head pain ER -