AUTHOR=Fischer Robert , Baukloh Vera TITLE=Commentary: Management Strategies for POSEIDON Groups 3 and 4 JOURNAL=Frontiers in Endocrinology VOLUME=11 YEAR=2020 URL=https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2020.00034 DOI=10.3389/fendo.2020.00034 ISSN=1664-2392