[1] Univ Pavia, Dept Internal Med, Pavia, Italy
[2] Fdn IRCCS Policlin San Matteo, Pediat Unit, Dept Mother & Child Hlth, Pavia, Italy
[3] Univ Pavia, Sect Human Nutr, Dept Publ Hlth Expt & Forens Med, Pavia, Italy
[4] Ist Citta Pavia, Pavia, Italy
[5] Univ Miami, Dept Med, Miller Sch Med Miami, Div Endocrinol Diabet & Metab, Miami, FL USA
[6] Fdn IRCCS Policlin San Matteo, Clin Chem Lab, Pavia, Italy
[7] Fdn IRCCS Policlin San Matteo, Immunoallergy Lab, Pediat Clin, Palermo, Italy
[8] Fdn IRCCS Policlin San Matteo, Sci Direct, Biometry & Clin Epidemiol, Pavia, Italy
[9] Childrens Hosp, Ist Mediterraneo Eccellenza Pediat, Pediat Cardiol Unit, Palermo, Italy
[10] Childrens Hosp, Ist Mediterraneo Eccellenza Pediat, Pediat Surg Unit, Palermo, Italy