1. Institute of Biology, National Center for Scientific Research “Demokritos”, Agia Paraskevi, 15310 Athens, Greece
2. Biomedical Research Foundation of the Academy of Athens and Department of Pharmacology, Medical School, University of Thessaly, 41110 Larissa, Greece
3. Department of Occupational and Environmental Medicine, Linköping University Hospital, 58185 Linköping, Sweden