Efficacy and safety of manual acupuncture for the treatment of upper limb motor dysfunction after stroke: Protocol for a systematic review and meta-analysis. - Cao, Di; Zhang, Xiaolin; Liu, Mingjun; Yang, Qiguang; Gu, Shuhong; Gao, Tianjiao; Cong, Lin; Ma, Dehui; Lin, Hongju; Chen, Shaotao (PLoS ONE, 2021)