[1] Univ Rzeszow, Med Coll Rzeszow Univ, Inst Med Sci, PL-35310 Rzeszow, Poland
[2] Med Univ Silesia, Fac Med Sci Zabrze, Dept Pediat, PL-40055 Zabrze, Poland
[3] Univ Rzeszow, Med Coll Rzeszow Univ, Inst Hlth Sci, PL-35310 Rzeszow, Poland
[4] Jagiellonian Univ Med Coll, Childrens Univ Hosp, PL-31008 Krakow, Poland
[5] Jagiellonian Univ Med Coll, Pediat Inst, Dept Pediat & Adolescent Endocrinol, Pediat, PL-31008 Krakow, Poland
[6] Jagiellonian Univ Med Coll, Pediat Inst, Dept Pediat Nephrol & Hypertens, Pediat, PL-31008 Krakow, Poland
[7] Med Univ Gdansk, Dept Publ Hlth & Social Med, PL-80210 Gdansk, Poland
[8] Med Univ Gdansk, Chair & Dept Paediat Gastroenterol Allergol & Chi, PL-80210 Gdansk, Poland
[9] Jagiellonian Univ Med Coll, Dept Pediat Gastroenterol & Nutr, PL-31008 Krakow, Poland
[10] Med Univ Silesia, Fac Med Sci Katowice, Dept Pediat Pediat Obes & Metab Bone Dis, Pediat & Pediat Endocrinol, PL-40055 Katowice, Poland
[11] Childrens Mem Hlth Inst, PL-04736 Warsaw, Poland
[12] Med Univ Silesia, Med Fac Katowice, Dept Pathophysiol, Hlth Promot & Obes Management Unit, PL-40055 Katowice, Poland
[13] Ctr Postgrad Med Educ, Dept Pediat, PL-01813 Warsaw, Poland
[14] Pomeranian Med Univ, Dept Pediat Endocrinol Diabetol Metab Disorders &, PL-70204 Szczecin, Poland
[15] Pomeranian Med Univ, Dept Pediat Pediat Oncol & Immunol, PL-70204 Szczecin, Poland
[16] Coll Family Phys Poland, PL-00209 Warsaw, Poland