Fig. 2
From: Sphenopalatine ganglion: block, radiofrequency ablation and neurostimulation - a systematic review
Risk of bias summary of randomized-controlled studies
Fig. 2 | The Journal of Headache and Pain
From: Sphenopalatine ganglion: block, radiofrequency ablation and neurostimulation - a systematic review
Risk of bias summary of randomized-controlled studies
