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Common risk factors for the development of COPD from two different studies
Common risk factors for the development of chronic obstructive pulmonary disease (COPD) from the Behavior Risk Factor Surveillance System (BFRSS) study done in the United States (U.S.)12 and from a systematic review that included 28 different countries.13 Common risk factors that were reported include older age, active smokers, but different in gender and location.
