1. Department of Radiobiology, National Veterinary Research Institute, Partyzantow 57, 12-100 Pulawy, Poland.
2. Department of Toxicology and Health Risk Assessment, National Institute of Public Health – National Institute of Hygiene, Chocimska 24, 00-791, Warsaw, Poland.
3. Retired: formerly Animal Sciences Group, Wageningen University and Research Centre, Wageningen, the Netherlands.