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World J Gastroenterol. Jul 28, 2022; 28(28): 3620-3626
Published online Jul 28, 2022. doi: 10.3748/wjg.v28.i28.3620
Figure 2
Figure 2 Endoscopic grading of subglottic stenosis. A: Grade I: 0%-50% obstruction; B: Grade II: 51%-70% obstruction; C: Grade III: 71%-99%; D: Grade IV: No detectable lumen.