Role and circadian rhythms of proinflammatory cytokines, cortisol, and melatonin in children with obstructive sleep apnea syndrome

Obstructive sleep apnea syndrome (OSAS) is characterized by episodes of partial or complete upper airway obstruction that occur during sleep, usually associated with a reduction in oxyhemoglobin saturation and/or hypercarbia. © 2007 Springer Science+Business Media, LLC. All rights reserved.