[1] Karolinska Hosp, Clin Genet Unit, Dept Mol Med, S-17176 Stockholm, Sweden
[2] Karolinska Inst, Dept Woman & Child Hlth, Childhood Canc Res Unit, S-10401 Stockholm, Sweden
[3] Karolinska Inst, Div Toxicol, Inst Environm Med, S-10401 Stockholm, Sweden
[4] Karolinska Inst, Dept Med Biochem & Biophys, S-10401 Stockholm, Sweden
[5] Karolinska Inst, Ctr Microbiol & Tumor Biol, S-10401 Stockholm, Sweden
[6] Hacettepe Univ, Dept Pediat Hematol, Ankara, Turkey
[7] Istanbul Sch Med, Dept Pediat Oncol, Istanbul, Turkey
[8] Childrens Univ Hosp, Dept Hematol & Oncol, Hamburg, Germany