The determination of biochemical and hematological parameters of blood samples will be as a part of the routine diagnostic methods. Data collection for the Se-AOX study will be performed at two-day intervals: T1 (1st-2nd day), T2 (3rd-4th day) and T3 (5th-6th day). Kinetic methods for estimating the activities of glutathione peroxidase (GPx, E.C. 1.11.1.9), glutathione reductase (GR, E.C.1.6.4.2) will be performed using a kit (Sigma-Aldrich, Germany) and that of superoxide dismutase (SOD, E.C. 1.15.1.1) by means of the SOD-Assay Kit-WST (Fluka, Japan) following the user manual provided.