[1] Univ Siena, Dipartimento Biol Mol, I-53100 Siena, Italy
[2] Univ Siena, Dipartimento Med Interna Sci Endocrinometab & Bio, I-53100 Siena, Italy
[3] CNR, ISPAAM, Proteom & Mass Spectrometry Lab, Naples, Italy
[4] Univ Siena, Policlin Le Scotte, Dipartimento Med Clin & Sci Immunol, I-53100 Siena, Italy