1. Dermatology Unit IRCCS Sant'Orsola Policlinic University of Bologna Bologna Italy
2. Chemical Department Istituto Zooprofilattico Sperimentale Lombardia Emilia Romagna Bologna Italy
3. Dermatotoxicology Unit Swiss Centre for Applied Human Toxicology University of Geneva Geneva Switzerland
4. Departments of Dermatology University Hospital of Geneva GenevaSwitzerland
5. Clinical Pathology University Hospital of Geneva Geneva Switzerland