A Novel Grading System for Supraglottic Stenosis Based on Morphology and Functional Status.

Steven AzizKarla O'DellMichael JohnsJosh SchindlerAl MeratiAbdullah Alanazi Stephanie WattsDavid GarberRebecca NelsonYael Bensoussan

Published in: The Laryngoscope (2022)

Level 3-According to the Oxford Center for Evidence-Based Medicine 2011 level of evidence guidelines, this non-randomized retrospective cohort study is classified as level 3 evidence Laryngoscope, 2022.

Keyphrases

open label
clinical trial
phase iii
placebo controlled