AUTHOR=Weiskirchen Ralf , Izzo Angelo A. TITLE=Editorial: Insights in Gastrointestinal and Hepatic Pharmacology: 2021 JOURNAL=Frontiers in Pharmacology VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2022.890212 DOI=10.3389/fphar.2022.890212 ISSN=1663-9812