1. Laboratory of Immunogenetics, Department of Genetics, Biology and Biochemistry, University of Torino Medical School, and
2. Unit of Endocrinology, Scientific Institute “Casa Sollievo della Sofferenza,” San Giovanni Rotondo, 71013 Foggia;
3. Division of Obstetrics and Gynecology, Department of Medical Science, University A. Avogadro of Eastern Piedmont, 28100 Novara; and
4. Experimental Medicine Center, 10126 Torino;
5. Department of Clinical Science, University of Rome “La Sapienza,” 00161 Rome, Italy