1. Department of Allergology and Occupational Dermatology; Dermatologikum Hamburg; Hamburg Germany
2. Department of Clinical Social Medicine; Center of Health Systems Research, Occupational and Environmental Dermatology; University of Heidelberg; Heidelberg Germany
3. Department for Clinical and Experimental Occupational Dermatology; Institute for Prevention and Occupational Medicine of the German Social Accident Insurance Institute of the Ruhr-University Bochum (IPA); Bochum Germany
4. Department of Psychosomatic Medicine and Psychotherapy; Justus Liebig University; Giessen Germany
5. Institute of Medical Psychology; Justus Liebig University; Giessen Germany
6. Childrens Hospital Osnabrück; Osnabrück Germany
7. Department of Dermatology and Allergy Biederstein; TU Munich; Munich Germany
8. Rehabilitation Clinic for Children and Adolescents; Sylt Germany
9. Department of Psychosomatic Medicine; Institute for Innovative Rehabilitation, Hospital Management and Distress Medicine (IREHA); Berolina Clinic; Lielje Group; Löhne Germany
10. Department of Pediatric Pulmonology and Immunology; Charité, Humboldt University; Berlin Germany
11. FAAK Köln; Childrens Hospital Cologne; Cologne Germany
12. Division of Immunodermatology and Allergy Research; Department of Dermatology and Allergy; Hannover Medical School; Hannover Germany