[1] Med Univ Lodz, Dept Pediat, Diabetol Endocrinol & Nephrol, Lodz, Poland
[2] Med Univ Lodz, Dept Biostat & Translat Med, Lodz, Poland
[3] Univ Clin Hosp Opole, Dept Pediat, Opole, Poland
[4] Med Univ Lublin, Dept Pediat Endocrinol & Diabetol, Lublin, Poland
[5] Med Univ Bialystok, Dept Pediat, Endocrinol & Diabetol Cardiol Unit, Bialystok, Poland
[6] Univ Opole, Dept Pediat, Opole, Poland
[7] Med Univ Warsaw, Dept Paediat, Warsaw, Poland
[8] Childrens Mem Hlth Inst, Dept Endocrinol & Diabetol, Warsaw, Poland
[9] Pomeranian Med Univ, Dept Pediat Endocrinol Diabetol Metab Dis & Cardi, Szczecin, Poland
[10] Med Coll Univ Rzeszow, Dept Pediat Pediat Endocrinol & Diabet, Rzeszow, Poland
[11] Med Univ Silesia, Dept Childrens Diabetol, Katowice, Poland
[12] Univ Warmia & Mazury, Dept Clin Pediat, Fac Med Sci, Olsztyn, Poland
[13] Univ Gdansk, Dept Pediat Diabetol & Endocrinol, Gdansk, Poland
[14] Jagiellonian Univ, Dept Pediat Endocrinol, Med Coll, Krakow, Poland
[15] Poznan Univ Med Sci, Dept Pediat Diabet Auxol & Obes, Poznan, Poland
[16] Wroclaw Med Univ, Dept Pediat Endocrinol & Diabetol, Wroclaw, Poland
[17] Reg Polyclin Hosp, Dept Children Endocrinol & Diabetol, Kielce, Poland