Letter to the Editor: Response by Authors.

Claus F Vogelmeier, Gerard J Criner, Fernando J Martinez, Antonio Anzueto, Peter J Barnes, Jean Bourbeau, Bartolome R Celli, Rongchang Chen, Marc Decramer, Leonardo M Fabbri, Peter Frith, David MG Halpin, M Victorina López Varela, Masaharu Nishimura, Nicolas Roche, Roberto Rodriguez-Roisin, Don D Sin, Dave Singh, Robert Stockley, Jørgen Vestbo, Jadwiga A Wedzicha, Alvar Agusti, None, Global Strategy for the Diagnosis, Management, and Prevention of Chronic Obstructive Lung Disease 2017 Report: GOLD Executive Summary Archivos de Bronconeumología (English Edition). ,vol. 53, pp. 128- 149 ,(2017) , 10.1016/J.ARBR.2017.02.001

Gregory L Kinney, Stephanie A Santorico, Kendra A Young, Michael H Cho, Peter J Castaldi, Raul San José Estépar, James C Ross, Jennifer G Dy, Barry J Make, Elizabeth A Regan, David A Lynch, Douglas C Everett, Sharon M Lutz, Edwin K Silverman, George R Washko, James D Crapo, John E Hokanson, , Identification of Chronic Obstructive Pulmonary Disease Axes That Predict All-Cause Mortality: The COPDGene Study. American Journal of Epidemiology. ,vol. 187, pp. 2109- 2116 ,(2018) , 10.1093/AJE/KWY087

Katherine E Lowe, Elizabeth A Regan, Antonio Anzueto, Erin Austin, John HM Austin, Terri H Beaty, Panayiotis V Benos, Christopher J Benway, Surya P Bhatt, Eugene R Bleecker, Sandeep Bodduluri, Jessica Bon, Aladin M Boriek, Adel RE Boueiz, Russell P Bowler, Matthew Budoff, Richard Casaburi, Peter J Castaldi, Jean-Paul Charbonnier, Michael H Cho, Alejandro Comellas, Douglas Conrad, Corinne Costa Davis, Gerard J Criner, Douglas Curran-Everett, Jeffrey L Curtis, Dawn L DeMeo, Alejandro A Diaz, Mark T Dransfield, Jennifer G Dy, Ashraf Fawzy, Margaret Fleming, Eric L Flenaugh, Marilyn G Foreman, Spyridon Fortis, Hirut Gebrekristos, Sarah Grant, Philippe A Grenier, Tian Gu, Abhya Gupta, MeiLan K Han, Nicola A Hanania, Nadia N Hansel, Lystra P Hayden, Craig P Hersh, Brian D Hobbs, Eric A Hoffman, James C Hogg, John E Hokanson, Karin F Hoth, Albert Hsiao, Stephen Humphries, Kathleen Jacobs, Francine L Jacobson, Ella A Kazerooni, Victor Kim, Woo Jin Kim, Gregory L Kinney, Harald Koegler, Sharon M Lutz, David A Lynch, Neil R MacIntye Jr, Barry J Make, Nathaniel Marchetti, Fernando J Martinez, Diego J Maselli, Anne M Mathews, Meredith C McCormack, Merry-Lynn N McDonald, Charlene E McEvoy, Matthew Moll, Sarah S Molye, Susan Murray, Hrudaya Nath, John D Newell Jr, Mariaelena Occhipinti, Matteo Paoletti, Trisha Parekh, Massimo Pistolesi, Katherine A Pratte, Nirupama Putcha, Margaret Ragland, Joseph M Reinhardt, Stephen I Rennard, Richard A Rosiello, James C Ross, Harry B Rossiter, Ingo Ruczinski, Raul San Jose Estepar, Frank C Sciurba, Jessica C Sieren, Harjinder Singh, Xavier Soler, Robert M Steiner, Matthew J Strand, William W Stringer, Ruth Tal-Singer, Byron Thomashow, Gonzalo Vegas Sánchez-Ferrero, John W Walsh, Emily S Wan, George R Washko, J Michael Wells, Chris H Wendt, Gloria Westney, Ava Wilson, Robert A Wise, Andrew Yen, Kendra Young, Jeong Yun, Edwin K Silverman, James D Crapo, None, COPDGene® 2019: Redefining the Diagnosis of Chronic Obstructive Pulmonary Disease. Chronic Obstructive Pulmonary Diseases: Journal of the COPD Foundation. ,vol. 6, pp. 384- 399 ,(2019) , 10.15326/JCOPDF.6.5.2019.0149

Kendra A Young, Elizabeth A Regan, MeiLan K Han, Sharon M Lutz, Margaret Ragland, Peter J Castaldi, George R Washko, Michael H Cho, Mathew Strand, Douglas Curran-Everett, Terri H Beaty, Russell P Bowler, Emily S Wan, David A Lynch, Barry J Make, Edwin K Silverman, James D Crapo, John E Hokanson, George L Kinney, COPDGene® Investigators, Subtypes of COPD Have Unique Distributions and Differential Risk of Mortality. Chronic Obstructive Pulmonary Diseases: Journal of the COPD Foundation. ,vol. 6, pp. 400- 413 ,(2019) , 10.15326/JCOPDF.6.5.2019.0150

Kendra A Young, Mathew Strand, Margaret Ragland, George L Kinney, Erin E Austin, Elizabeth A Regan, Katherine E Lowe, Barry J Make, Edwin K Silverman, James D Crapo, John E Hokanson, COPDGene® Investigators, Pulmonary Subtypes Exhibit Differential Global Initiative for Chronic Obstructive Lung Disease Spirometry Stage Progression: The COPDGene® Study. Chronic Obstructive Pulmonary Diseases: Journal of the COPD Foundation. ,vol. 6, pp. 414- 429 ,(2019) , 10.15326/JCOPDF.6.5.2019.0155

Albert Miller, Lee K. Brown, Comments on "COPDGene 2019: Redefining the Diagnosis of Chronic Obstructive Pulmonary Disease". Chronic Obstructive Pulmonary Diseases: Journal of the COPD Foundation. ,vol. 7, pp. 79- 81 ,(2020) , 10.15326/JCOPDF.7.2.2020.0134