Peripheral-central correlation study of acupuncture for chronic tinnitus study protocol for a randomized controlled trial - Jiang, Da; Huang, Xiao-Han; Fang, Ke; Zhao, Ming-Hui; Li, Yang; Hu, Han-Tong; Fang, Lian-Qiang; Gao, Hong; Zhou, Jie (Frontiers in Medicine, 2025)