title: Do we need controlled clinical trials in pulmonary arterial hypertension?
authors: N
authors: N
authors: Galiè
mesh_terms: D017326:Clinical Trials, Phase III as Topic; D018849:Controlled Clinical Trials as Topic; D006801:Humans; D006976:Hypertension, Pulmonary / Q000188:drug therapy*; D016285:Iloprost / Q000627:therapeutic use; D014665:Vasodilator Agents / Q000627:therapeutic use
chemical_list: D014665:Vasodilator Agents; D016285:Iloprost