Asthma

• Research Site — Aschaffenburg, Germany
• Research Site — Bad Lippspringe, Germany
• Research Site — Bad Sassendorf, Germany
• Research Site — Bergkamen, Germany

• Maternal and Child Health Sciences, Ninewells Hospital and Medical School — Dundee, Tayside, United Kingdom

• General Practice Research Database — London, United Kingdom

• Research Site — Ichikawa, Chiba, Japan
• Research Site — Yokosuka, Kanagawa, Japan
• Research Site — Chiyoda City, Tokyo, Japan
• Research City — Hino, Tokyo, Japan

• Research Site — Aabenraa, Denmark
• Research Site — Aabybro, Denmark
• Research Site — Aalborg, Denmark
• Research Site — Aarhus, Denmark

• Research Site — Uppsala, Uppsala County, Sweden

Not specified

• Northwestern University — Chicago, Illinois, United States

• Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec — Québec, Quebec, Canada

• University of São Paulo - Heart Institute and Hospital das Clínicas — São Paulo, Brazil