Brazilian Journal of Medical and Biological Research v.43 n.10 2010 Brazilian Journal of Medical and Biological Research Associação Brasileira de Divulgação Científica (ABDC) instacron:ABDC Brazilian Journal of Medical and Biological Research, Volume: 43, Issue: 10, Pages: 950-956, Published: OCT 2010 Brazilian Journal of Medical and Biological Research, Vol 43, Iss 10, Pp 950-956 (2010)