| http://www.w3.org/ns/prov#value | - If the tongue 34 is in the position described at the point of completing the exhalation cycle, it can act as a check valve, preventing inhalation. [0136] FIGS. 20 to 23 illustrate one embodiment of another system for treating sleep-related breathing disorders such as snoring, upper airway resistance syndrome and obstructive sleep apnea.
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