Choi S, Haghighi B, Choi J, Hoffman EA, Comellas AP, Newell JD, Wenzel SE, Castro M, Fain SB, Jarjour NN, Schiebler ML, Barr RG, Han MK, Bleecker ER, Cooper CB, Couper D, Hansel N, Kanner RE, Kazerooni EA, Kleerup EAC, Martinez FJ, O'Neal WK, Woodruff PG, Lin CL. Differentiation of quantitative CT imaging phenotypes in asthma versus COPD. BMJ Open Respir Res. 2017; 4(1):e000252.