Comparison of real-time PCR and nested PCR for the detection of Y chromosome sequences in the peripheral blood mononuclear cells of patients with systemic sclerosis. Issue 1 (16th December 2008) - Mosca, M; Giuliano, T; Curcio, M; Doveri, M; De Feo, F; Tani, C; Bazzichi, L; Bombardieri, S