Emphysema

• University of Alabama at Birmingham — Birmingham, Alabama, United States
• Harbor-UCLA Medical Center — Torrance, California, United States
• National Jewish Health — Denver, Colorado, United States
• Univerisity of Nebraska Medical Center — Omaha, Nebraska, United States

• Dept. of Pneumology and Critical Care Medicine, Thoraxklinik, University of Heidelberg — Heidelberg, Baden-Wurttemberg, Germany
• University Medical Center Groningen — Groningen, Netherlands

• University of Florida — Gainesville, Florida, United States
• Medical University of South Carolina — Charleston, South Carolina, United States

• Ludwig Boltzmann Institut Fur COPD und pneumologische Epidemologie — Vienna, Austria
• CHU Grenoble — Grenoble, France
• CHU Montpellier — Montpellier, France
• Centre Hospitalier Universitaire de Nice — Nice, France

• UAB Lung Health Center — Birmingham, Alabama, United States

• The University of Alabama at Birmingham — Birmingham, Alabama, United States
• Arizona Pulmonary Specialists — Phoenix, Arizona, United States
• University of Southern California — Los Angeles, California, United States
• El Camino Hospital — Mountain View, California, United States

• Klinikum Donaustauf — Donaustauf, Germany
• Asklepios — Gauting, Germany
• Pneumology and Respiratory Care Medicine Thoraxklinik, University of Heidelberg — Heidelberg, Germany
• Lungenklinik — Hemer, Germany

• University Medical Center Groningen — Groningen, Netherlands
• CIRO — Horn, Netherlands

Not specified

• Mayo Clinic in Arizona — Scottsdale, Arizona, United States
• Mayo Clinic in Florida — Jacksonville, Florida, United States
• Mayo Clinic in Rochester — Rochester, Minnesota, United States