Asthma

• Imperial College Healthcare NHS Trust — London, United Kingdom
• Imperial College Healthcare NHS Trust — London, United Kingdom
• Nottingham University Hospitals NHS Trust — Nottingham, United Kingdom

• The First Affiliated Hospital of Henan University of Traditional Chinese Medicine — Zhengzhou, Henan, China

• Tampere University — Tampere, Finland

• National Jewish Health — Denver, Colorado, United States

Not specified

Not specified

• Allergy Department, Trousseau Hospital — Paris, France

• Gumushane Univetsity — Gümüşhane, Trabzon, Ordu, Giresun, Rize, Artvin, Gümüşhane, Turkey (Türkiye)

• NIEHS Clinical Research Unit (CRU) — Research Triangle Park, North Carolina, United States

• National Institutes of Health Clinical Center — Bethesda, Maryland, United States