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= Paid-up subscribersSaul P. Smoking duration the best indicator of COPD progression. Practitioner May 2018;262(1815):7
Smoking duration the best indicator of COPD progression
22 May 2018
The number of years that an individual has been smoking is closely linked to the degree of structural lung disease, airflow obstruction and functional outcomes in chronic obstructive pulmonary disease (COPD). It is a better measure than pack-years or the number of cigarettes smoked per day, a large study from the USA has shown.
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