AUTHOR=Ballini Andrea , Scacco Salvatore , Saini Rajiv , Cantore Stefania , Mori Giorgio TITLE=Editorial: Advances in Endocrinology: Stem Cells and Growth Factors JOURNAL=Frontiers in Endocrinology VOLUME=11 YEAR=2020 URL=https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2020.00564 DOI=10.3389/fendo.2020.00564 ISSN=1664-2392