1. Children's Hospital University Hospital Cologne Cologne Germany
2. Department of Dermatology, Jinling Hospital Nanjing University School of Medicine Nanjing China
3. Department of Dermatovenerology Clinical Hospital Centre Rijeka Rijeka Croatia
4. Faculty of Medicine University of Rijeka Rijeka Croatia
5. Saw Swee Hock School of Public Health National University of Singapore Singapore Singapore
6. FOM University of Applied Science for Economics & ManagementEssen Germany