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Emphysema is a lung disease that interferes with normal breathing. It's one of a group of lung diseases known collectively as chronic obstructive pulmonary disease (COPD). Other diseases in this group include asthma and chronic bronchitis. Nearly 2 million Americans suffer from emphysema. To learn more about this lung disease, take this true-false quiz.
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Want to quit smoking? Here is the latest information about nicotine replacement therapy and other aids that can help you.
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