作者单位:Clinic of Internal Diseases, Medical University of Lublin, 16 Staszica St., 20-081 Lublin, Poland[1]Department of Analytical Chemistry, Medical University of Lublin, 6 Chod?ki St., 20-093 Lublin, Poland[2]Department of Combustion Engines and Transport, Technical University of Lublin, 36 Nadbystrzycka St., 20-081 Lublin, Poland[3]