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If untreated, emphysema sufferers often have so much trouble breathing that they must be put on a [[ventilator]]. The disease is often fatal, but the death is very slow and painful.
 
If untreated, emphysema sufferers often have so much trouble breathing that they must be put on a [[ventilator]]. The disease is often fatal, but the death is very slow and painful.
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The most common cause is cigarette [[smoking]]. Quitting smoking can help prevent getting the disease or alleviate its effects.  
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The most common cause is [[cigarette]] [[smoking]]. Quitting smoking can help prevent getting the disease or alleviate its effects.  
    
==References==
 
==References==
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