References
- Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease2016 Available from: http://goldcopd.org/global-strategy-diagnosis-management-prevention-copd-2016/Accessed October 15, 2016
- Antonelli-IncalziRImperialeCBelliaVSaRA InvestigatorsDo GOLD stages of COPD severity really correspond to differences in health status?Eur Respir J200322344444914516133
- Guirguis-BlakeJMSengerCAWebberEMMularskiRAWhitlockEPScreening for chronic obstructive pulmonary disease: evidence report and systematic review for the US preventive services task forceJAMA2016315131378139327046366
- DecramerMCooperCBTreatment of COPD: the sooner the better?Thorax201065983784120805184
- RennardSIDrummondMBEarly chronic obstructive pulmonary disease: definition, assessment, and preventionLancet201538599791778178825943942
- TantucciCModinaDLung function decline in COPDInt J Chron Obstruct Pulmon Dis20127959922371650
- HoggJCChuFUtokaparchSThe nature of small-airway obstruction in chronic obstructive pulmonary diseaseN Engl J Med2004350262645265315215480
- Rodriguez-RoisinRDrakulovicMRodriguezDARocaJBarberaJAWagnerPDVentilation-perfusion imbalance and chronic obstructive pulmonary disease staging severityJ Appl Physiol (1985)200910661902190819372303
- AgustiAEdwardsLDRennardSIEvaluation of COPD Longitudinally to Identify Predictive Surrogate Endpoints (ECLIPSE) InvestigatorsPersistent systemic inflammation is associated with poor clinical outcomes in COPD: a novel phenotypePLoS One201275e3748322624038
- Van RemoortelHHornikxMLangerDRisk factors and comorbidities in the preclinical stages of chronic obstructive pulmonary diseaseAm J Respir Crit Care Med20141891303824219412
- YooKHKimYSSheenSSPrevalence of chronic obstructive pulmonary disease in Korea: the fourth Korean National Health and Nutrition Examination Survey, 2008Respirology201116465966521342331
- KimCYooKHRheeCKHealth care use and economic burden of patients with diagnosed chronic obstructive pulmonary disease in KoreaInt J Tuberc Lung Dis201418673774324903947
- KimJLeeJHKimYAssociation between chronic obstructive pulmonary disease and gastroesophageal reflux disease: a national cross-sectional cohort studyBMC Pulm Med2013135123927016
- KimJRheeCKYooKHThe health care burden of high grade chronic obstructive pulmonary disease in Korea: analysis of the Korean Health Insurance Review and Assessment Service dataInt J Chron Obstruct Pulmon Dis2013856156824277985
- RheeCKYoonHKYooKHMedical utilization and cost in patients with overlap syndrome of chronic obstructive pulmonary disease and asthmaCOPD201411216317024111662
- LangePCelliBAgustiALung-function trajectories leading to chronic obstructive pulmonary diseaseN Engl J Med2015373211112226154786
- ManninoDMThornDSwensenAHolguinFPrevalence and outcomes of diabetes, hypertension and cardiovascular disease in COPDEur Respir J200832496296918579551