Pulmonary Disease, Chronic Obstructive

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

• Tallaght University Hospital — Dublin, Ireland

• University Hospitals of Leicester NHS Trust — Leicester, Leicestershire, United Kingdom

• Christiana Care Health System — Newark, Delaware, United States
• Johns Hopkins University — Baltimore, Maryland, United States

• Bispebjerg and Frederiksberg University Hospital — Copenhagen, Copenhagen North West, Denmark
• Amager and Hvidovre University Hospital — Hvidovre, Danmark, Denmark
• Gentofte and Herlev University Hospital — Gentofte Municipality, Hellerup, Denmark
• Nordsjaelland University Hospital — Hillerød, Denmark

• Eurasian Association of Therapists — Moscow, Russia

Not specified

• Schlaflabor Fluntern — Zurich, Canton of Zurich, Switzerland

• Pulmonary Research Institute of Southeast Michigan — Farmington Hills, Michigan, United States

• Novartis Investigative Site — Andalusia, Alabama, United States
• Novartis Investigative Site — Los Angeles, California, United States
• Novartis Investigative Site — Westminster, California, United States
• Novartis Investigative Site — Ormond Beach, Florida, United States