Asthma

• University of California at Davis School of Medicine, Ticon 1, Suite 100B, 2000 Stockton Blvd — Sacramento, California, United States

• University of California, Davis — Sacramento, California, United States

• Dept of Respiratory and Sleep Medicine, Royal Hospital for Sick Children — Edinburgh, Scotland, United Kingdom

Not specified

• Institute for Lung Health — Leicester, Leicestershire, United Kingdom

• Wilhelmina Children's Hospital (UMCU) — Utrecht, Netherlands

• Kaiser Permanente Center for Health Research — Portland, Oregon, United States

• Kaiser Permanente Center for Health Research — Portland, Oregon, United States

• Mailman School of Public Health at Columbia University — New York, United States

Not specified