1. Epidemiology of chronic obstructive pulmonary disease;Lebowitz;Clin Chest Med,1990
2. Chronic nonspecific respiratory disease;Ferris;Berlín, New Hampshire 1961-1967: A crosssectional study. Am Rev Respir Dis,1971
3. The natural history of forced expiratory voluntes;Targer;Effect of cigarette smoking and respiratory symptoms. Am Rev Respir Dis,1988
4. Efficacy and safety of inhaled corticosteroids in asthma;Barnes;Am Rev Respir Dis,1993
5. Effect of inhaled corticosteroids on airway inflammation and symptoms in asthma;Djukanovic;Am Rev Respir Dis,1992