Pulmonary Disease, Chronic Obstructive

• Pearl Therapeutics Study Site — Clearwater, Florida, United States
• Pearl Therapeutics Study Site — Charleston, South Carolina, United States
• Pearl Therapeutics Study Site — Spartanburg, South Carolina, United States

• GSK Investigational Site — Mobile, Alabama, United States
• GSK Investigational Site — Wheat Ridge, Colorado, United States
• GSK Investigational Site — Biddeford, Maine, United States
• GSK Investigational Site — St Louis, Missouri, United States

• Bispebjerg Hospital — Copenhagen, Denmark
• Gentofte Hospital — Hellerup, Denmark

Not specified

• Vancouver Island Health Authority — Victoria, British Columbia, Canada
• Western Health — Corner Brook, Newfoundland and Labrador, Canada
• Hamilton Niagara Haldimand Brant Local Health Integration Network — Hamilton, Ontario, Canada

• Dartmouth Hitchcock Medical Center — Lebanon, New Hampshire, United States

• A. R. Kaufman YMCA — Kitchener, Ontario, Canada

• Dr. Suat Seren Chest Diseases and Surgery Education and Training Hospital — Izmir, Turkey (Türkiye)

• Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center — Torrance, California, United States

• GSK Investigational Site — Durham, North Carolina, United States