1. Department of Pharmacy; School of Health Sciences; University of Patras; Rion-Patras Greece
2. Department of Dermatology; Faculty of Medicine; Medical Center-University of Freiburg; Freiburg Germany
3. Aghia Sofia Children's Hospital; Athens Greece
4. Epithelial Differentiation and Rheumatoid Autoimmunity Unit (UDEAR); Hôpital Purpan; UMR 1056 Inserm - Université de Toulouse; Toulouse Cedex 9 France