title: Viagra eases symptoms of pulmonary arterial hypertension in children.
authors.forename: Kathryn
authors.initials: K
authors.lastname: Senior
mesh_terms: D002648:Child; D017326:Clinical Trials, Phase III as Topic; D006801:Humans; D006976:Hypertension, Pulmonary / Q000188:drug therapy* / Q000503:physiopathology; D010879:Piperazines / Q000494:pharmacology / Q000627:therapeutic use*; D011687:Purines; D016032:Randomized Controlled Trials as Topic; D000068677:Sildenafil Citrate; D013450:Sulfones; D014665:Vasodilator Agents / Q000494:pharmacology / Q000627:therapeutic use
chemical_list: D010879:Piperazines; D011687:Purines; D013450:Sulfones; D014665:Vasodilator Agents; D000068677:Sildenafil Citrate