AUTHOR=Wang Zhan-Qiang , Li Kuo , Huang Jie , Huo Tian-Tian , Lv Pei-Yuan TITLE=Corrigendum: MicroRNA Let-7i Is a Promising Serum Biomarker for Post-stroke Cognitive Impairment and Alleviated OGD-Induced Cell Damage in vitro by Regulating Bcl-2 JOURNAL=Frontiers in Neuroscience VOLUME=15 YEAR=2021 URL=https://www.frontiersin.org/journals/neuroscience/articles/10.3389/fnins.2021.648121 DOI=10.3389/fnins.2021.648121 ISSN=1662-453X