CHEST Journal · 1999 · 111 citations · 20 references
MedicineChronic Disease ControlHealth SciencesClinical EpidemiologyEpidemiologyPulmonologyChronic DiseaseChronic Disease SurveillanceChronic Obstructive Pulmonary DiseaseObstructive Lung DiseaseRespiratory DiseaseRespiratory Disease PreventionChronic Obstructive Pulmonary Disease Epidemiology
20