Affiliation: | (1) Division of Pulmonary Science and Critical Care Medicine, University of Colorado School of Medicine, Denver, CO 80262, USA;(2) Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Bundang CHA Hospital, CHA University School of Medicine, Seongnam, Kyunggi-do, Korea;(3) Division of Pulmonary and Critical Care Medicine, The Victoria Johnson Center for Emphysema Research, Virginia Commonwealth University, Richmond, VA 23284, USA |