AUTHOR=Kawamara Kazuhiro , Kelsey Tom , Hiraike Osamu TITLE=Editorial: Ovarian Ageing: Pathophysiology and Recent Development of Maintaining Ovarian Reserve JOURNAL=Frontiers in Endocrinology VOLUME=11 YEAR=2020 URL=https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2020.591764 DOI=10.3389/fendo.2020.591764 ISSN=1664-2392