Posts Tagged ‘refractory asthma’
Chronic Obstructive Pulmonary Disease
Smoking Main Cause Chronic obstructive pulmonary disease (COPD) is a very serious disorder that damages the lungs and affects the ability to breathe. The cause is usually from cigarette smoke, but can also be from breathing in all kinds of fine particles of polluted air in a factory. In some countries where people use open…
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