1. HEORCreativ‐Ceutical Paris France
2. Institute for Health Services Research in Dermatology and Nursing (IVDP) University Medical Center Hamburg‐Eppendorf (UKE) Hamburg Germany
3. LEO Pharma Kopenhagen Denmark
4. HEORCreativ‐Ceutical Sofia Bulgaria
5. Public Health Department Aix‐Marseille University Marseilles France