AUTHOR= Frontiers Production Office 

TITLE=Erratum: Metformin Downregulates PD-L1 Expression in Esophageal Squamous Cell Carcinoma by Inhibiting IL-6 Signaling Pathway

JOURNAL=Frontiers in Oncology

VOLUME=11

YEAR=2021

URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2021.832786

DOI=10.3389/fonc.2021.832786

ISSN=2234-943X