COVID-19 pandemic impact on sleep habits, chronotype, and health-related quality of life among high school students: a longitudinal study COVID-19 pandemic impact on sleep habits, chronotype, and health-related quality of life among high school students: a longitudinal study Download Correlation between the transverse dimension of the maxilla, upper airway obstructive site, and OSA severity Estimating sleep stages using cardiorespiratory signals: validation of a novel algorithm across a wide range of sleep-disordered breathing severity