[1] KortexMed Inst Med Educ, Res Inst Physiotherapy & Gerontol, DE-38667 Bad Harzburg, Germany
[2] Univ Heidelberg, Univ Childrens Hosp, Dept 3, D-6900 Heidelberg, Germany
[3] Otto VonGuericke Univ Magdegurg, Inst Clin Chem & Pathol Biochem, Dept Pathol Biochem, Magdeburg, Germany
[4] Univ Roma La Sapienza, Lab Clin Biochem, Rome, Italy
[5] Univ Roma La Sapienza, Dept Biochem Sci, I-00185 Rome, Italy