title: Thrombotic thrombocytopenic purpura: now is the time for clinical trials.
mesh_terms: D002986:Clinical Trials as Topic; D003131:Combined Modality Therapy; D049673:History, 20th Century; D006801:Humans; D011697:Purpura, Thrombotic Thrombocytopenic / Q000209:etiology / Q000266:history* / Q000628:therapy