1. Department of Dermatology and Allergy; Charité-Universitätsmedizin Berlin; Berlin; Germany
2. Pediatric Pneumology and Immunology; Charité-Universitätsmedizin Berlin; Berlin; Germany
3. Institute of Medical Psychology; Justus-Liebig-University; Giessen; Germany
4. Centre for Evidence-based Healthcare; University Hospital Carl Gustav Carus; Dresden; Germany