[1] Regina Margherita Hosp, Div Pediat Endocrinol, Turin, Italy
[2] Univ Milan, Hosp San Raffaele, Inst Sci, Dept Pediat,Endocrine Unit, Milan, Italy
[3] L Sacco Hosp Vialba, Dept Pediat, I-20157 Milan, Italy
[4] Univ Pavia, Dept Pediat, I-27100 Pavia, Italy
[5] OASI Inst, Dept Pediat, Troina, Enna, Italy
[6] Burlo Garofalo Hosp, Dept Pediat, Trieste, Italy
[7] Bambino Gesu Hosp, Div Endocrinol, Rome, Italy