[1] Univ Med Ctr Ljubljana, Univ Childrens Hosp, Bohoriceva 20, Ljubljana 1000, Slovenia
[2] Univ Childrens Hosp, Univ Med Ctr Ljubljana, Dept Endocrinol Diabet & Metab Dis, Bohoriceva 20, Ljubljana 1000, Slovenia
[3] Univ Ljubljana, Fac Med, Vrazov Trg 2, Ljubljana 1000, Slovenia
[4] Minist Hlth, Natl Med Eth Comm Republ Slovenia, Stefanova 5, Ljubljana 1000, Slovenia