1 Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, National Jewish Health, Denver, Colo. Electronic address: mikewechsler@gmail.com.
2 University Medical Center Freiburg, Clinic of Pneumology, Department of Medicine, University of Freiburg, Freiburg, Germany.
3 Department of Medicine, Division of Pulmonary and Critical Care Medicine, University of Michigan, Ann Arbor, Mich.
4 Global Development, Inflammation, R&D, Amgen, Thousand Oaks, Calif.