Retraction: Combination of Tanshinone IIA and Cisplatin Inhibits Esophageal Squamous Cell Carcinoma by Down-Regulating NF-kB/COX-2/VEGF Pathway

Front Oncol. 2021 Jun 29:11:721658. doi: 10.3389/fonc.2021.721658. eCollection 2021.

Abstract

[This retracts the article DOI: 10.3389/fonc.2020.01756.].