title: Some concerns about the Sydney criteria for antiphospholipid syndrome.
authors.forename: J F
authors.initials: JF
authors.lastname: Carvalho
mesh_terms: D016736:Antiphospholipid Syndrome / Q000145:classification / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D013927:Thrombosis / Q000209:etiology; D014657:Vasculitis / Q000209:etiology