title: A letter from Brazil.
authors.affiliation: Hospital das Clinicas da UFPE, Departmento de Medicina Clinica, Recife-Pernambuco, Brazil.
authors.forename: F S
authors.initials: FS
authors.lastname: Cavalcanti
mesh_terms: D001938:Brazil; D006801:Humans; D012219:Rheumatology; D012955:Societies, Medical