title: [Janus bifrons and the post graduation].
authors.affiliation: Instituto de Saúde, Secretaria de Estado da Saúde de São Paulo, Brazil. jrcarval@usp.br
authors.forename: José da Rocha
authors.initials: Jda R
authors.lastname: Carvalheiro
mesh_terms: D001938:Brazil; D004500:Education, Graduate / Q000639:trends; D011634:Public Health / Q000193:education*