Lung Diseases, Obstructive

• Allergy and Asthma Specialists Medical Group and Research Ct — Huntington Beach, California, United States
• Allergy and Asthma Medical Group & Research Center — San Diego, California, United States
• Allergy & Asthma Associates of Santa Clara Res. Center — San Jose, California, United States
• Colorado Allergy and Asthma Centers, PC — Denver, Colorado, United States

• Jazan University — Jizan, Saudi Arabia

Not specified

• Tufts Medical Center — Boston, Massachusetts, United States

• Tanta University Hospital — Tanta, Elgarbia, Egypt

• Research Site — Los Angeles, California, United States
• Research Site — Orlando, Florida, United States
• Research Site — Lincoln, Nebraska, United States
• Research Site — Cincinnati, Ohio, United States

• Yagmur Sarac Gul — Rize, Turkey (Türkiye)

• CHU Fattouma Bourguiba — Monastir, Tunisia
• Emergency Departement — Monastir, Tunisia
• Emergency department of fattouma bourguiba university hospital — Monastir, Tunisia

• GSK Investigational Site — Enschede, Netherlands
• GSK Investigational Site — Nijverdal, Netherlands
• GSK Investigational Site — Rotterdam, Netherlands

• McMaster University — Hamilton, Ontario, Canada
• Robarts Research Institute; The University of Western Ontario; London Health Sciences Centre — London, Ontario, Canada