Professor of Dermatology at the Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Portugal        
     
                                                    
    
        
        
        
            MD, Phd, Consultant Dermatologist at The Academic Medical Centre of the University of Amsterdam, The Netherlands        
     
                                                    
    
        
        
        
            Professor of Dermatology at the Department of Dermatology, National Reference Center for Rare Skin Diseases, University of Bordeaux