作者单位:Istanbul Univ, Dept Biochem, Istanbul Fac Med, Istanbul, Turkey[1]Istanbul Univ, Istanbul Fac Med, Dept Paediat Surg, Istanbul, Turkey[2]Istanbul Training & Res Hosp, Dept Gen Surg, Istanbul, Turkey[3]Sisli Etfal Educ & Res Hosp, Dept Pathol, Istanbul, Turkey[4]