AUTHOR=Symeonides Stefan , Gourley Charlie TITLE=Ovarian Cancer Molecular Stratification and Tumor Heterogeneity: A Necessity and a Challenge JOURNAL=Frontiers in Oncology VOLUME=5 YEAR=2015 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2015.00229 DOI=10.3389/fonc.2015.00229 ISSN=2234-943X