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Introduction of transcutaneous, low-voltage, non-pulsatile direct current (DC) therapy for migraine and chronic headaches. A comparison with transcutaneous electrical nerve stimulation (TENS)
Annal N, Soundappan SV, Palaniappan KMC, Chandrasekar S
Headache Quarterly 1992;3(4):434-437
clinical trial
3/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: No; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: Yes; Intention-to-treat analysis: No; Between-group comparisons: No; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

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