AUTHOR=Frew John W. 

TITLE=The Hygiene Hypothesis, Old Friends, and New Genes

JOURNAL=Frontiers in Immunology

VOLUME=10

YEAR=2019

URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2019.00388

DOI=10.3389/fimmu.2019.00388

ISSN=1664-3224