Resolution: standard / high
Figure 2.
Trial processes chart. Note: VAS = visual analogue scale (0–10); MSQ = Migraine-Specific Quality-of-Life Questionnaire; Headache intensity grade: 0 = no headache; 1 = mild headache; 2 = moderate headache; 3 = severe headache; TCD = Transcranial Doppler Sonography.
Li et al. Trials 2008 9:57 doi:10.1186/1745-6215-9-57
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