1. Department of Dermatology University Hospital of Brest Brest France
2. Univ. BrestLIEN Brest France
3. Biostatistics Consultant Pérouges France
4. La Roche‐Posay Dermatological Laboratories Levallois‐Perret France
5. Department of Dermatology Charité Universitaetsmedizin Berlin Germany
6. EMMA Fontenay‐sous‐Bois France
7. Hôpital Necker Enfants MaladesSanté Publique Paris France