1 Allergology and Immunology, Department of Dermatology, Venereology, and Allergology, Charité - Universitätsmedizin Berlin, Germany.
2 Nutritional Counseling and Therapy, Focus on Allergology, Munich, Germany.
3 University Hospital Zurich, Department of Dermatology, Zurich, Switzerland, and Cantonal Hospital St. Gallen, Department of Dermatology and Allergology, St. Gallen, Switzerland.
4 Clinic of Pediatrics m. S. Pneumology, Immunology and Intensive Care Medicine, Charité - Universitätsmedizin Berlin, Germany.
5 Institute of Nutritional Medicine and Prevention, University of Hohenheim, Stuttgart, Germany.
6 Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Austria.
7 Department of Dermatology and Allergology, Biederstein, Klinikum rechts der Isar, Technical University of Munich, Germany.
8 Klinik für Kinder und Jugendmedizin/Päd. Intensivmedizin, Eltern-Kind-Zentrum Prof. Hess Klinikum Bremen-Mitte.
9 Practice for Pediatric and Adolescent Medicine m. S. Allergology and Pediatric Pneumology, Schwäbisch Gmünd.
10 University Clinic for Pediatric and Adolescent Medicine, Evangelisches Klinikum Bethel gGmbH, Bielefeld.
11 Research Group Clinical and Molecular Allergology, Research Center Borstel, Airway Research Center North (ARCN), member of the German Center for Lung Research (DZL), Borstel.
12 Interdisciplinary Allergy Outpatient Clinic, Medical Clinic III, University Hospital Schleswig-Holstein, Lübeck.
13 Allergy and Asthma Center Westend, Berlin.
14 Center for Rhinology and Allergology, Wiesbaden.
15 Pediatric Clinic and Pediatric Polyclinic, Dr. von Haunersches Kinderspital, Department of Metabolic and Nutritional Medicine, Ludwig-Maximilians-University, Munich.
16 Pediatric and Adolescent Medicine, St.- Marien-Hospital, Bonn.
17 Practice for Pulmonary Medicine and Allergology, Buxtehude.
18 Paul-Ehrlich-Institut, Langen.
19 Practice for Pediatric Pneumology/Allergology at the Children's Center Dresden (Kid), Dresen.
20 Medical Clinic II, Malteser Waldkrankenhaus, Erlangen.
21 Department of Dermatology, University Medical Center, Johannes Gutenberg-University Mainz.
22 Nutritional Therapy, Focus on Allergology and Gastroenterology, Schwarzenbek, Germany.
23 German Allergy and Asthma Association, Mönchengladbach, Germany.
24 Pneumology, University Hospital of Otto von Guericke University, Magdeburg, Germany.
25 University Hospital for Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria.
26 Clinic of Dermatology, Venereology and Allergology, University Medical Center Leipzig, Germany.
27 Nose and Throat Clinic, University Hospital Düsseldorf, Germany.
28 Clinic of Dermatology, Allergology and Venerology, Hannover Medical School, Germany, and.
29 Department of Dermatology, Venerology and Allergology, Charité - Universitätsmedizin Berlin.