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Fig. 4 | The Journal of Headache and Pain

Fig. 4

From: Which is the best transcranial direct current stimulation protocol for migraine prevention? A systematic review and critical appraisal of randomized controlled trials

Fig. 4

Adherence of available randomized controlled trials on transcranial direct current stimulation to the guideline recommendations for clinical trials of neuromodulation devices for the treatment of migraine in adults [14]. A green circle indicates that the criterion was met; a red circle, that it was not met; an amber circle, that it was not specified

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