Lung Diseases, Obstructive

• University of Arizona — Tucson, Arizona, United States
• LAC-USC Medical Center — Los Angeles, California, United States
• University of California Davis Health System; Division of Pulmonary and Critical Care Medicine — Sacramento, California, United States
• Yale School of Medicine — New Haven, Connecticut, United States

• Achieve Clinical Research, LLC — Birmingham, Alabama, United States
• Phoenix Medical Research Institute, LLC; Phoenix Medical Research Institute, LLC — Peoria, Arizona, United States
• California Medical Research Associates, Inc. — Northridge, California, United States
• Palmtree Clinical research Inc — Palm Springs, California, United States

• GSK Investigational Site — Benešov, Czechia
• GSK Investigational Site — Cvikov, Czechia
• GSK Investigational Site — Kralupy nad Vltavou, Czechia
• GSK Investigational Site — Kroměříž, Czechia

• National Institutes of Health Clinical Center, 9000 Rockville Pike — Bethesda, Maryland, United States
• INOVA Fairfax Hospital — Falls Church, Virginia, United States

Not specified

• Respiratory Biomedical Research Centre — Leicester, Leicestershire, United Kingdom
• Loughborough Universtiy — Loughborough, Leicestershire, United Kingdom

• Rouen University Hospital — Rouen, France

• Cincinnati Children's Hospital Medical Center — Cincinnati, Ohio, United States

• Cruces University Hospital, Biocruces Institute — Barakaldo, Bizkaia, Spain

• Emphysema COPD Research Center — Pittsburgh, Pennsylvania, United States