AUTHOR=Agúndez José A., Klein Kathrin TITLE=Functional polymorphisms of xenobiotics metabolizing enzymes—a research topic JOURNAL=Frontiers in Genetics VOLUME=4 YEAR=2013 URL=https://www.frontiersin.org/journals/genetics/articles/10.3389/fgene.2013.00079 DOI=10.3389/fgene.2013.00079 ISSN=1664-8021