(HealthDay)—In thrombotic antiphospholipid antibody syndrome (APS), rivaroxaban is not noninferior to dose-adjusted vitamin K antagonists (VKAs), according to a study published online Oct. 15 in the Annals of Internal Medicine. Josep Ordi-Ros, M.D., Ph.D., from the Vall d’Hebrón Research Institute in Barcelona, Spain, and colleagues conducted a three-year noninferiority trial at six university hospitals in […]