1. Department of Dermatology and Venereology National Medical University Kiev Ukraine
2. Clinical Epidemiology Unit Istituto Dermopatico dell'Immacolata IDI‐IRCCS Rome Italy
3. Children's Hospital Zagreb Medical School University of Zagreb Zagreb Croatia
4. University Department of Dermatology and Venereology Clinical Hospital Center Zagreb and School of Medicine of University in Zagreb Zagreb Croatia
5. Dermatology Dali Medical Bucharest Romania
6. Paediatric Dermatology Discipline Dermatology Research Unit Colentina Clinical Hospital “Carol Davila” University of Medicine and Pharmacy Bucharest Romania
7. Paediatric Dermatology Discipline Colentina Clinical Hospital “Carol Davila” University of Medicine and Pharmacy Bucharest Romania
8. Department of Dermatology II Colentina Clinical Hospital “Carol Davila” University of Medicine and Pharmacy Bucharest Romania
9. Department of Pharmaceutical Sciences Faculty of Medicine and Pharmacy “St. Spiridon” Hospital “Dunărea de Jos” University of Galati Derma Clinique Iasi Romania
10. First Pediatric Department of Athens University Aghia Sophia Children's Hospital Athens Greece
11. Department of Dermatology, Venereology and Allergology Wrocław Medical University Wrocław Poland
12. Department of Dermatology, Venereology and Allergology Medical University of Gdansk Gdansk Poland
13. Kiev City Clinical Dermatovenereologic Hospital Kiev Ukraine
14. Department of Cellular Radiobiology State Institution “National Research Center for Radiation Medicine of National Academy of Medical Sciences of Ukraine” Kiev Ukraine
15. Department of Pediatrics Number 1 National Medical University Kiev Ukraine