AUTHOR=Langella Philippe , Guarner Francisco , Martín Rebeca TITLE=Editorial: Next-Generation Probiotics: From Commensal Bacteria to Novel Drugs and Food Supplements JOURNAL=Frontiers in Microbiology VOLUME=10 YEAR=2019 URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2019.01973 DOI=10.3389/fmicb.2019.01973 ISSN=1664-302X