References
- WedzichaJAThe heterogeneity of chronic obstructive pulmonary diseaseThorax200055863163210899236
- RabeKFHurdSAnzuetoAGlobal strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease: GOLD executive summaryAm J Respir Crit Care Med2007176653255517507545
- AgustiACalverleyPMCelliBCharacterisation of COPD heterogeneity in the ECLIPSE cohortRespir Res20101112220831787
- VestboJHurdSSAgustíAGGlobal strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease: GOLD executive summaryAm J Respir Crit Care Med2013187434736522878278
- LangePMarottJLVestboJPrediction of the clinical course of chronic obstructive pulmonary disease, using the new GOLD classification: a study of the general populationAm J Respir Crit Care Med20121861097598122997207
- SorianoJBAlfagemeIAlmagroPDistribution and prognostic validity of the new Global Initiative for Chronic Obstructive Lung Disease grading classificationChest2013143369470223187891
- Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD)2017 Available from: http://goldcopd.orgAccessed June, 2017
- MenezesAMWehrmeisterFCPerez-PadillaRThe PLATINO study: description of the distribution, stability, and mortality according to the Global Initiative for Chronic Obstructive Lung Disease classification from 2007 to 2017Int J Chron Obstruct Pulmon Dis2017121491150128553101
- LeeJYChonGRRheeCKCharacteristics of patients with chronic obstructive pulmonary disease at the first visit to a pulmonary medical center in Korea: The Korea COpd Subgroup Study Team CohortJ Korean Med Sci201631455356027051239
- ParkTSLeeJSSeoJBStudy design and outcomes of Korean Obstructive Lung Disease (KOLD) Cohort StudyTuberc Respir Dis2014764169174
- HanMKMuellerovaHCurran-EverettDGOLD 2011 disease severity classification in COPDGene: a prospective cohort studyLancet Respir Med201311435024321803
- HanMKQuibreraPMCarrettaEEFrequency of exacerbations in patients with chronic obstructive pulmonary disease: an analysis of the SPIROMICS cohortLancet Respir Med20175861962628668356
- NatoriHKawayamaTSuetomoMEvaluation of the Modified Medical Research Council Dyspnea Scale for predicting hospitalization and exacerbation in Japanese patients with chronic obstructive pulmonary diseaseIntern Med2016551152426726080
- McgarveyLLeeAJRobertsJGruffydd-JonesKMcknightEHaughneyJCharacterisation of the frequent exacerbator phenotype in COPD patients in a large UK primary care populationRespir Med2015109222823725613107
- HoogendoornMFeenstraTLHoogenveenRTAlMMölkenMRAssociation between lung function and exacerbation frequency in patients with COPDInt J Chron Obstruct Pulmon Dis2010543544421191438
- HwangYIParkYBOhYMComparison of Korean COPD guideline and GOLD initiative report in term of acute exacerbation: a validation study for Korean COPD guidelineJ Korean Med Sci20142981108111225120321
- KimDSKimYSJungKSPrevalence of chronic obstructive pulmonary disease in Korea: a population-based spirometry surveyAm J Respir Crit Care Med2005172784284715976382