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Choi S, Haghighi B, Choi J for the National Heart, Lung and Blood Institute’s SubPopulations and InteRmediate Outcome Measures In COPD Study (SPIROMICS) and Severe Asthma Research Program (SARP), et al Differentiation of quantitative CT imaging phenotypes in asthma versus COPD BMJ Open Respiratory Research 2017;4:e000252. doi: 10.1136/bmjresp-2017-000252.
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Castro, Mario and et al, ,"Differentiation of quantitative CT imaging phenotypes in asthma versus COPD." BMJ Open Respiratory Research.4,. e000252. (2017).