Brazilian Journal of Medical and Biological Research, Volume: 46, Issue: 12, Pages: 1047-1055, Published: 10 DEC 2013 Brazilian Journal of Medical and Biological Research v.46 n.12 2013 Brazilian Journal of Medical and Biological Research Associação Brasileira de Divulgação Científica (ABDC) instacron:ABDC Brazilian Journal of Medical and Biological Research, Vol 46, Iss 12, Pp 1047-1055 (2013)