AUTHOR= Frontiers Editorial Office TITLE=Retraction: The Design, Characterizations, and Tumor Angiogenesis Inhibition of a Multi-Epitope Peptibody With bFGF/VEGFA JOURNAL=Frontiers in Oncology VOLUME=10 YEAR=2021 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2020.644690 DOI=10.3389/fonc.2020.644690 ISSN=2234-943X