Univag - University Center, Faculty of Medicine, Av. Dom Orlando Chaves, 2655 - Cristo Rei, CEP:78118-000 Várzea Grande, Mato Grosso, Brazil. Electronic address: marcelo.pinheiro@univag.edu.br. Cuiabá University (UNIC), Faculty of Medicine, Rua: Manoel Jose de Arruda, 3.100, Jardim Europa, CEP:78065-900 Cuiabá, Mato Grosso, Brazil. Post-graduation in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso(UFMT), Av. Fernando Corrêa da Costa, 2367, Boa Esperança, CEP:78060-900 Cuiabá, Mato Grosso, Brazil.