1. Department for Pediatric Pneumology and Immunology; Charité University Hospital; Berlin Germany
2. Pediatric Rheumatology; Department of Pediatrics and Child Health; University of Manitoba; Winnipeg MB Canada
3. tg medical services; Berlin Germany
4. Symbiopharm GmbH; Herborn Germany
5. GE-ME Design and Analyse Klinischer Prüfungen; Frankfurt am Main Germany
6. Biostatistics; Leipzig Germany
7. Children Center Bethel; Protestant Hospital Bielefeld; Bielefeld Germany