http://WWW.ADVANCEDRESPIRATORYCENTRE.COM
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What Is Obstructive Sleep Apnea in Adults? Obstructive sleep apnea (OSA) is a common problem that affects a person’s breathing during sleep. A person with OSA has times during sleep in which air cannot flow normally into the lungs. The block in airflow (obstruction) is usually caused by the collapse of the soft tissues in the back of the throat (upper airway) and tongue during sleep.
http://WWW.ADVANCEDRESPIRATORYCENTRE.COM/what-is-obstructive-sleep-apne/b93
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