1. Nuclear Instrumentation Laboratory; Federal University of Rio de Janeiro; 21941-942 Rio de Janeiro RJ Brazil
2. Biotechnology Laboratory - Bioengineering - DIPRO; National Institute of Metrology, Standardization and Technology; Xerém. Duque de Caxias RJ Brazil
3. Department of Histology and Embryology; Federal University of Rio de Janeiro; RJ Brazil
4. Department of Urology; Andarai General Hospital; 20541170 Rio de Janeiro RJ Brazil
5. Physics Institute; Rio de Janeiro State University; RJ Brazil