Metformin Effects on FOXP3+ and CD8+ T Cell Infiltrates of Head and Neck Squamous Cell Carcinoma.
Dev R AminTony RichaMehri MollaeeTingting ZhanPatrick T TassoneJennifer JohnsonAdam LuginbuhlDavid CognettiUbaldo Martinez-OutschoornRobert StappCharalambos SolomidesUlrich RodeckJoseph CurryPublished in: The Laryngoscope (2019)
1b. This study is most accurately described as a non-randomized controlled trial and therefore may reflect a level of evidence below 1b but above 2a from the provided "levels of evidence" chart. Laryngoscope, 130:E490-E498, 2020.