AUTHOR=Di Franco Simone , Pellegata Natalia Simona , Luconi Michaela , Stassi Giorgio TITLE=Editorial: Stem Cells in Endocrine Tumors JOURNAL=Frontiers in Endocrinology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2021.722790 DOI=10.3389/fendo.2021.722790 ISSN=1664-2392