Sleep apnea.
D000402:Airway Obstruction / Q000150:complications*; D001049:Apnea / Q000209:etiology* / Q000628:therapy; D006970:Disorders of Excessive Somnolence / Q000209:etiology*; D006801:Humans; D012890:Sleep; D012893:Sleep Wake Disorders / Q000209:etiology*