1. Department of Dermatology and Venereology National Medical University Kiev Ukraine
2. Children's Hospital Zagreb Medical School University of Zagreb Zagreb Croatia
3. National Children's Hospital “Okhmatdyt” Kiev Ukraine
4. Paediatric Dermatology Discipline Dermatology Research Unit Colentina Clinical Hospital “Carol Davila” University of Medicine and Pharmacy Bucharest Romania
5. Department of Dermatology II Colentina Clinical Hospital “Carol Davila” University of Medicine and Pharmacy Bucharest Romania
6. Department of Paediatric Dermatology Colentina Clinical Hospital “Carol Davila” University of Medicine and Pharmacy Bucharest Romania
7. Department of Psychology University of Zaragoza Zaragoza Spain
8. Department of Dermatology University Hospital Miguel Servet Zaragoza Spain