Figure 1From: Transcutaneous electrical stimulation at auricular acupoints innervated by auricular branch of vagus nerve pairing tone for tinnitus: study protocol for a randomized controlled clinical trialFlow chart. ABVN, auricular branch of vagus nerve; HADS, Hospital Anxiety and Depression Scale; THI, Tinnitus Handicap Inventory; VAS, visual analogue scale.Back to article page