AUTHOR=Tonelli Erika , Pascale Esterina , Troianiello Miriam , D'Addario Claudio , Adriani Walter TITLE=DAT1 Gene Methylation as an Epigenetic Biomarker in Attention Deficit Hyperactivity Disorder: A Commentary JOURNAL=Frontiers in Genetics VOLUME=11 YEAR=2020 URL=https://www.frontiersin.org/journals/genetics/articles/10.3389/fgene.2020.00444 DOI=10.3389/fgene.2020.00444 ISSN=1664-8021