To further evaluate the efficacy and safety of computerized tomography–guided sphenopalatine ganglion–targeted pulsed radiofrequency treatment for patients with refractory episodic and chronic cluster headache (CH). Click to show full abstract
To further evaluate the efficacy and safety of computerized tomography–guided sphenopalatine ganglion–targeted pulsed radiofrequency treatment for patients with refractory episodic and chronic cluster headache (CH).
               
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