Microscopic Polyangiitis

• University of Alabama — Birmingham, Alabama, United States
• Johns Hopkins University — Baltimore, Maryland, United States
• Boston University — Boston, Massachusetts, United States
• Mayo Clinic Foundation — Rochester, Minnesota, United States

• University of South Florida Data Management and Coordinating Center — Tampa, Florida, United States

• University of South Florida Data Management Coordinating Center — Tampa, Florida, United States

• University of South Florida Data Management Coordinating Center — Tampa, Florida, United States

• University of South Florida Data Management Coordinating Center — Tampa, Florida, United States

• Hôpital Cochin — Paris, France

• Mayo Clinic — Rochester, Minnesota, United States

• University Hospitals Birmingham NHS Foundation Trust — Birmingham, West Midlands, United Kingdom

• Hôpital Cochin — Paris, France

Not specified