Figure 2From: Randomized controlled trial to treat migraine with acupuncture: design and protocol 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.Back to article page