1. Department of Physiology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Jordana 19 Street, 41-808 Zabrze, Poland
2. Independent Public Health Care, Opole Cancer Center Prof. Tadeusz Koszarowski, Katowicka 45-061 Street, 46-020 Opole, Poland
3. Department of Statistics, Department of Instrumental Analysis, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Ostrogórska 31 Street, 41-200 Sosnowiec, Poland
4. Department of Internal Medicine and Geriatrics, Jagiellonian University Medical College in Cracow, Jakubowskiego 28 Street, 31-501 Cracow, Poland
5. Department of Endoscopy, University Hospital in Cracow, Jakubowskiego 28 Street, 31-501 Cracow, Poland
6. Department of Biochemistry, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Jordana 19 Street, 41-808 Zabrze, Poland
7. Department of Rehabilitation, 3rd Specialist Hospital in Rybnik, Energetyków 46 Street, 44-200 Rybnik, Poland
8. SLU University Animal Hospital, Swedish University of Agricultural Sciences, SE-750 07 Uppsala, Sweden