AUTHOR=Heying R. , d’Udekem Y. , Gewillig M. , Rychik J. TITLE=Editorial: The fontan circulation: Problems and solutions JOURNAL=Frontiers in Pediatrics VOLUME=10 YEAR=2022 URL=https://www.frontiersin.org/journals/pediatrics/articles/10.3389/fped.2022.1087739 DOI=10.3389/fped.2022.1087739 ISSN=2296-2360