Lung Diseases, Obstructive

• Loma Linda University Medical Center — Loma Linda, California, United States
• UCSD Medical Center - Thornton Hospital — San Diego, California, United States
• UCSD Medical Center — San Diego, California, United States
• Olive View - UCLA Medical Center — Sylmar, California, United States

• Anaheim, California, United States
• San Diego, California, United States
• Bay Pines, Florida, United States
• Clearwater, Florida, United States

• California Allergy and Asthma Medical Group — Los Angeles, California, United States

• Research Dept. of Respiratory Medicine, Aarhus University Hospital — Aarhus C, Denmark

• Research Dept. of Respiratory Medicine, Aarhus University Hospital — Aarhus C, Denmark

• Research Dept. of Respiratory Medicine, Aarhus University Hospital — Aarhus C, Denmark

• California Allergy and Asthma Medical Group, Inc. — Los Angeles, California, United States

Not specified

• Olmstead Medical Center Byron — Byron, Minnesota, United States
• Olmstead Medical Center Chatfield — Chatfield, Minnesota, United States
• Olmstead Medical Center Pine Island — Pine Island, Minnesota, United States
• Olmstead Medical Center Plainview — Plainview, Minnesota, United States

• Hospital Universitario de Guadalajara — Guadalajara, Castille-La Mancha, Spain