1. Post-graduate program in Pharmaceutical Sciences, University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil;
2. Department of Biomedical Sciences, University of León, León, Spain;
3. Department of Pathology, University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil;
4. Nuclear Engineering Program, Military Institute of Engineering, Rio de Janeiro, Rio de Janeiro, Brazil;
5. Servicio de Radiofísica y Protección Radiológica, Hospital Universitario de León, León, Spain;
6. Department of Medicine, University of Oviedo, Oviedo, Spain;
7. Department of Physiology and Pharmacology, University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil