AUTHOR=Lin Yufeng , Wang Kaiyuan , Ma Chunchao , Wang Xuesong , Gong Zhongying , Zhang Rui , Zang Dawei , Cheng Yan TITLE=Corrigendum: Evaluation of Metformin on Cognitive Improvement in Patients With Non-dementia Vascular Cognitive Impairment and Abnormal Glucose Metabolism JOURNAL=Frontiers in Aging Neuroscience VOLUME=10 YEAR=2018 URL=https://www.frontiersin.org/journals/aging-neuroscience/articles/10.3389/fnagi.2018.00322 DOI=10.3389/fnagi.2018.00322 ISSN=1663-4365