1 Pediatric Allergy Unit, Department of Pediatrics, Gynecology and Obstetrics, University Hospitals of Geneva, Geneva, Switzerland.
2 Division of Allergy & Clinical Immunology, Brigham and Women's Hospital, Boston, Massachusetts, USA.
3 University of Belgrade Faculty of Medicine, University Children's Hospital, Belgrade, Serbia.
4 Division of Allergy and Clinical Immunology, Lausanne University Hospital (CHUV), Lausanne, Switzerland.
5 Clinical Research Center for Allergy and Rheumatology, National Hospital Organization Sagamihara National Hospital, Kanagawa, Japan.
6 Pediatric Epidemiology, Department of Pediatrics, Medical Faculty, Leipzig University, Leipzig, Germany.
7 Department of Pediatric Allergy and Asthma, Hacettepe University School of Medicine, Ankara, Turkey.
8 PAI Editorial Office, Berlin, Germany.
9 Department of Paediatrics, Faculty of Medicine, The Chinese University of Hong Kong, China.
10 Murdoch Children's Research Institute, Parkville, Victoria, Australia.
11 Department of Pediatrics, The University of Melbourne, Parkville, Victoria, Australia.
12 Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore City, Singapore.
13 Khoo Teck Puat-National University Children's Medical Institute, National University Hospital, National University Health System, Singapore City, Singapore.