[1] Istanbul Univ, Family Hlth Dept, Inst Child Hlth, Istanbul, Turkey
[2] Istanbul Univ, Inst Child Hlth, TR-34390 Capa, Turkey
[3] Istanbul Univ, Fac Med, Dept Pediat Endocrinol, Istanbul, Turkey
[4] Trakya Univ, Fac Med, Dept Biostat, Edirne, Turkey