AUTHOR=Lanzi Cinzia , Yates Edwin Alexander , Cassinelli Giuliana TITLE=Editorial: Heparan Sulfate Proteoglycans and Their Endogenous Modifying Enzymes: Cancer Players, Biomarkers and Therapeutic Targets JOURNAL=Frontiers in Oncology VOLUME=10 YEAR=2020 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2020.00195 DOI=10.3389/fonc.2020.00195 ISSN=2234-943X