AUTHOR=von Wolff Michael , Stute Petra TITLE=Judging the Fertility Protective Effect of GnRH Agonists in Chemotherapy—It Is a Matter of Perspective JOURNAL=Frontiers in Endocrinology VOLUME=8 YEAR=2017 URL=https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2017.00069 DOI=10.3389/fendo.2017.00069 ISSN=1664-2392