Transcutaneous electrical acupoint stimulation for upper limb motor recovery after stroke: a systematic review and meta-analysis - Wang, Xiaoyu; Yin, Lianjun; Wang, Yikun; Zhang, Haining; Zhang, Shiying; Wu, Jiantong; Fan, Shun; Li, Zhengfei; Li, Huanan; Wang, Jingui (Frontiers in Aging Neuroscience, 2024)