1. Laboratory of Immunology, Endocrinology, Institute of Clinica Medica, University of Palermo, Italy.
2. Allergology and Clinical Immunology, D.I.M.I., University of Genoa, Italy.
3. of Immunology, Endocrinology, Institute of Clinica Medica, University of Palermo, Italy.
4. Institute of Biology, CNR, Palermo, Italy.
5. Immunogenetics, Diabetes Research Institute, University of Miami School of Medicine, Miami, Florida.