[1] Univ Med Ctr Ljubljana, Univ Childrens Hosp, Dept Endocrinol Diabet & Metab Dis, Ljubljana, Slovenia
[2] Univ Childrens Hosp Ljubljana, Dept Gastroenterol Hepatol & Nutr, Ljubljana, Slovenia
[3] Univ Ljubljana, Fac Med, Ljubljana, Slovenia
[4] Univ Med Ctr Univ Childrens Hosp, Dept Pediat Endocrinol Diabet & Metab, Ljubljana, Slovenia
[5] UMC Ljubljana, Clin Inst Special Lab Diagnost, Ljubljana, Slovenia
[6] UMC Ljubljana, Dept Endocrinol Diabet & Metab Disorders, Ljubljana, Slovenia
[7] UMC Ljubljana, Clin Inst Special Lab Diagnost, Ljubljana, Slovenia
[8] UMC Ljubljana, Clin Inst Special Lab Diagnost, Ljubljana, Slovenia
[9] Univ Ljubljana, Fac Med, Ljubljana, Slovenia