1 Clinical Dermatology, IRCCS Istituto Ortopedico Galeazzi, Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy.
2 Istituti Clinici Scientifici Maugeri IRCCS, Laboratory of Experimental and Clinical Toxicology, Toxicology Unit, Pavia Poison Control Center and National Toxicology Information Center, Pavia, Italy.
3 Italian Association for Metals and Biocompatibility Research - A.I.R.M.E.B., Milan, Italy.