1. Dermatology Unit Department of Experimental, Diagnostic and Specialty Medicine University of Bologna Bologna Italy
2. Istituto Zooprofilattico Sperimentale Lombardia Emilia RomagnaChemical Department Bologna Italy
3. Swiss Centre for Applied Human Toxicology, Dermatotoxicology Unit University of Geneva Geneva Switzerland
4. Diabetes Unit Ravenna Internal Medicine Department Romagna Local Health Unit Ravenna Italy
5. University Hospital of Geneva Geneva Switzerland