Chronic obstructive pulmonary disease (COPD) was traditionally thought to be caused by
tobacco smoking. However, recognition of the importance of non-smoking-related risk …

Chronic obstructive pulmonary disease (COPD) is a leading cause of morbidity and mortality
worldwide. Tobacco smoking is established as a major risk factor, but emerging evidence …

Background A substantial proportion of patients with chronic obstructive pulmonary disease
(COPD) have never smoked. We tested the hypothesis that, in individuals with COPD, never …

Chronic obstructive pulmonary disease (COPD) continues to cause a heavy health and
economic burden around the world. Recent studies have added evidence to the etiologic …

Chronic obstructive pulmonary disease (COPD) continues to be an important cause of
morbidity, mortality, and health-care costs worldwide. It is a global health issue, with …

Chronic obstructive pulmonary disease (COPD) is a major cause of chronic morbidity and
mortality and represents a substantial economic and social burden throughout the world. It is …

Chronic obstructive pulmonary disease (COPD) is a preventable and treatable disease that
causes a heavy health and increasing economic burden both in the United States and …

Background Chronic obstructive pulmonary disease (COPD) is a growing cause of morbidity
and mortality worldwide, and accurate estimates of the prevalence of this disease are …

Chronic obstructive pulmonary disease (COPD) is a preventable and treatable disease
characterized by progressive airflow limitation and represents one of the most prevalent …

Chronic obstructive pulmonary disease (COPD) is an increasing cause of morbidity and
mortality worldwide, and it has been strongly correlated to tobacco smoking. While a number …