AUTHOR=Gao Ju , Yi Hongwei , Tang Xiaowei , Feng Xiaotang , Yu Miao , Sha Weiwei , Wang Xiang , Zhang Xiaobin , Zhang Xiangrong TITLE=Corrigendum: DNA Methylation and Gene Expression of Matrix Metalloproteinase 9 Gene in Deficit and Non-deficit Schizophrenia JOURNAL=Frontiers in Genetics VOLUME=11 YEAR=2020 URL=https://www.frontiersin.org/journals/genetics/articles/10.3389/fgene.2020.00823 DOI=10.3389/fgene.2020.00823 ISSN=1664-8021