Corrigendum: A Chinese medicine formula (Bushen Huoxue Tongluo) for the treatment of chronic subjective tinnitus: a study protocol for a pilot, assessor-blinded, randomized clinical trial - Hong Wei Zhang; Hong Wei Zhang; Kammy N. K. Yeung; Michael C. F. Tong; Zhi-Xiu Lin; Zhi-Xiu Lin; Waitsz W. T. Chang; Iris H-Y. Ng; Chi Him Sum; Ka Chun Leung; Kam Leung Chan; Kam Leung Chan; et al. (Frontiers Media S.A., 2023)