[1] Univ Ljubljana, Fac Med, Ljubljana, Slovenia
[2] UMC Ljubljana, Univ Childrens Hosp, Dept Endocrinol Diabet & Metab Dis, Ljubljana, Slovenia
[3] Stanford Univ, Cardiovasc Inst, Cardiovasc Med, Prevent Res Ctr,Diabet Res Ctr,Dept Med, Palo Alto, CA 94304 USA