1. National Heart & Lung Institute, Section of Inflammation and Repair; Imperial College London; London UK
2. Imperial Clinical Trials Unit; Imperial College London; London UK
3. Centre for Genomic and Experimental Medicine; University of Edinburgh; Edinburgh UK
4. Division of Paediatric and Adolescent Medicine; Oslo University Hospital; Oslo Norway
5. Faculty of Medicine, Institute of Clinical Medicine; University of Oslo; Oslo Norway
6. Department of Dermatology; Oslo University Hospital; Oslo Norway
7. Allergy and Lung Health Unit, Melbourne School of Population and Global Health; University of Melbourne; Melbourne Australia
8. Department of Pediatrics; University of Wisconsin School of Medicine and Public Health; Madison Wisconsin USA
9. Center for Preventive Medical Sciences; Chiba University; Chiba Japan
10. Department of Midwifery and Women's Health; Graduate School of Medicine, The University of Tokyo; Tokyo Japan
11. Allergy Center; National Center for Child Health and Development; Tokyo Japan
12. Department of Pediatrics; Keio University School of Medicine; Tokyo Japan
13. Centre of Evidence Based Dermatology; University of Nottingham; Nottingham UK
14. Sheffield Dermatology Research, Department of Infection, Immunity & Cardiovascular Disease; The University of Sheffield; Sheffield UK
15. Division of Nursing, Midwifery and Social Work, School of Health Sciences; The University of Manchester; Manchester UK
16. Center for Evidence-Based Healthcare; Faculty of Medicine Carl Gustav Carus, Technischen Universität (TU) Dresden; Dresden Germany
17. Department of Dermatology and Allergy; University Hospital Scheswig-Holstein; Kiel Germany
18. Department of Dermatology; Oregon Health & Science University; Portland Oregon USA
19. Nottingham Clinical Trials Unit; University of Nottingham; Nottingham UK
20. NHMRC Clinical Trials Centre; University of Sydney; Camperdown Australia
21. Cochrane Skin, Centre of Evidence Based Dermatology; University of Nottingham; Nottingham UK