[1] Univ Pecs, Inst Bioanal, Fac Medicine, H-7624 Pecs, Hungary
[2] Sts Cyril & Methodius Univ, Inst Chem, Fac Nat Sci & Math, Skopje 1001, Macedonia
[3] Sts Cyril & Methodius Univ, Dept Enol, Inst Agr, Skopje 1000, Macedonia
[4] Univ Pecs, Dept Analyt & Environm Chem, Fac Sci, H-7624 Pecs, Hungary
[5] Univ Pecs, Dept Biochem & Med Chem, Fac Med, H-7624 Pecs, Hungary