Supplemental material, Supplemental_Material for Repetitive transcranial magnetic stimulation of lower limb motor function in patients with stroke: a systematic review and meta-analysis of randomized controlled trials by Yi-Chun Tung, Chien-Hung Lai, Chun-De Liao, Shih-Wei Huang, Tsan-Hon Liou and Hung-Chou Chen in Clinical Rehabilitation