title: [Thrombotic thrombocytopenic purpura: presentation of 4 cases].
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008875:Middle Aged; D011697:Purpura, Thrombotic Thrombocytopenic
vernacular_title: Púrpura trombótica trombocitopénica: presentación de cuatro casos.