1. Department of Dermato Cancerology; Nantes University; Nantes France
2. Department of Dermatology; Pennsylvania State University; Hershey Pennsylvania USA
3. Department of Dermatology; Harrogate and District Foundation Trust; Harrogate UK
4. New York-Presbyterian Hospital; New York New York USA
5. Clinica Dermatológica de Moragas; Barcelona Spain
6. Department of Dermatology; Johns Hopkins School of Medicine; Baltimore Maryland USA