Fig. 1From: Acupuncture for Primary Sjögren Syndrome (pSS) on symptomatic improvements: study protocol for a randomized controlled trialThe sham and real acupuncture we use in this study. a: sham acupuncture as control; b: real acupuncture. 1. needle handle; 2. needle body; 3. adhesive pad; 4. blunt tip; 5. CutisBack to article page