Chronic Bronchitis and Current Smoking Are Associated with More Goblet Cells in Moderate to Severe COPD and Smokers without Airflow Obstruction

The Chronic Bronchitic Phenotype of COPD

(2011) Victor Kim et al.   CHEST

The Effect of Chronic Sputum Production on Respiratory Symptoms in Severe COPD

(2011) Victor Kim et al.   COPD-Journal of Chronic Obstructive Pulmonary Disease

Systematic review with meta-analysis of the epidemiological evidence relating smoking to COPD, chronic bronchitis and emphysema

(2011) Barbara A Forey et al.   BMC Pulmonary Medicine

Small Airway Mucous Metaplasia and Inflammation in Chronic Obstructive Pulmonary Disease

(2009) Victor Kim et al.   COPD-Journal of Chronic Obstructive Pulmonary Disease

MUC5AC expression is increased in bronchial submucosal glands of stable COPD patients

(2009) Gaetano Caramori et al.   HISTOPATHOLOGY

Cough and Sputum Production Are Associated With Frequent Exacerbations and Hospitalizations in COPD Subjects

(2008) Pierre-Régis Burgel et al.   CHEST