AUTHOR= Frontiers Editorial Office TITLE=Retraction: Curcumin-Free Turmeric Exhibits Activity against Human HCT-116 Colon Tumor Xenograft: Comparison with Curcumin and Whole Turmeric JOURNAL=Frontiers in Pharmacology VOLUME=9 YEAR=2018 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2018.00400 DOI=10.3389/fphar.2018.00400 ISSN=1663-9812