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Woman 'can't breathe' without sleeping in wartime gas mask due to new neighbour - Daily Star
Sleep apnoea giving you a hard time? This face mask can make breathing easier - The Economic Times
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Study examines sleep apnea's role in lung diseases | VUMC Reporter | Vanderbilt University
Anesthetic gases raise Earth's temperature (a little) while you sleep
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Surplus Yugoslavian MC-1 Gas Mask – The Supply Sergeant
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CPAP Devices for Sleep Apnea - familydoctor.org
No, Face Masks Can't Cause CO2 Poisoning
Hong Kong: 'Revolution is war, and no war is without bloodshed' | Hong Kong | The Guardian
Virginia National Guard helping fight COVID-19 | Article | The United States Army
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