1. Channing Division of Network Medicine, Department of Medicine Brigham and Women's Hospital and Harvard Medical School Boston Massachusetts USA
2. Unit of Integrative Metabolomics, Institute of Environmental Medicine Karolinska Institute Stockholm Sweden
3. Department of Respiratory Medicine and Allergy Karolinska University Hospital Stockholm Sweden
4. Gunma University Initiative for Advanced Research (GIAR) Gunma University Maebashi Gunma Japan
5. Copenhagen Prospective Studies on Asthma in Childhood (COPSAC), Herlev and Gentofte Hospital University of Copenhagen Gentofte Denmark
6. Division of Allergy and Clinical Immunology Brigham and Women's Hospital and Harvard Medical School Boston Massachusetts USA
7. Division of Pediatric Pulmonary Medicine, Department of Pediatrics Golisano Children's Hospital and University of Rochester Medical Center Rochester New York USA