(2017). Global, regional, and national deaths, prevalence, disability-adjusted life years, and years lived with disability for chronic obstructive pulmonary disease and asthma, 1990–2015: A systematic analysis for the Global Burden of Disease Study 2015. Lancet Respir Med.
Dyfyniad Arddull Chicago"Global, Regional, and National Deaths, Prevalence, Disability-adjusted Life Years, and Years Lived With Disability for Chronic Obstructive Pulmonary Disease and Asthma, 1990–2015: A Systematic Analysis for the Global Burden of Disease Study 2015." Lancet Respir Med 2017.
Dyfyniad MLA"Global, Regional, and National Deaths, Prevalence, Disability-adjusted Life Years, and Years Lived With Disability for Chronic Obstructive Pulmonary Disease and Asthma, 1990–2015: A Systematic Analysis for the Global Burden of Disease Study 2015." Lancet Respir Med 2017.