Brazilian Journal of Medical and Biological Research, Vol 46, Iss 3, Pp 299-305 (2013) Brazilian Journal of Medical and Biological Research Brazilian Journal of Medical and Biological Research, Volume: 46, Issue: 3, Pages: 299-305, Published: 15 MAR 2013 Brazilian Journal of Medical and Biological Research v.46 n.3 2013 Associação Brasileira de Divulgação Científica (ABDC) instacron:ABDC