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Luciana P e Silva Machado, Marianita B de Macedo Nery, Cláudio de Góis Nery and Cláudio R Leles*
* Corresponding author: Cláudio R Leles crleles@odonto.ufg.br
BMC Oral Health 2012, 12:26 doi:10.1186/1472-6831-12-26