Abuse of the Epworth Sleepiness Scale Abuse of the Epworth Sleepiness Scale Download The Prevalence and Severity of Obstructive Sleep Apnea in Severe Obesity: The Impact of Ethnicity Acoustic Pharyngometry Measurement of Minimal Cross-Sectional Airway Area Is a Significant Independent Predictor of Moderate-To-Severe Obstructive Sleep Apnea