Effect of acupuncture on the gait disturbance and hemodynamic changes in the prefrontal cortex: a study protocol for a randomized controlled trial - Hong, Zhenmei; Zhang, Shuijing; Zhang, Shuqing; Zhao, Yuqi; Ye, Xiancong; Shu, Xinxin; Chen, Yufan; Yan, Shuding; Ma, Ruijie (Frontiers in Neurology, 2025)