Fig. 1From: Influences of De Qi induced by acupuncture on immediate and accumulated analgesic effects in patients with knee osteoarthritis: study protocol for a randomized controlled trialFlow chart of the trial. KOA knee osteoarthritis, VAS visual analog scale, KOOS Knee injury and Osteoarthritis Outcome Score, C-MMASS Chinese-Modified Massachusetts General Hospital Acupuncture Sensation ScaleBack to article page