AUTHOR=Papadopoulos Nikolaos G. TITLE=Current Grand Challenges in Allergy JOURNAL=Frontiers in Allergy VOLUME=1 YEAR=2020 URL=https://www.frontiersin.org/journals/allergy/articles/10.3389/falgy.2020.547654 DOI=10.3389/falgy.2020.547654 ISSN=2673-6101