title: Sildenafil and pulmonary hypertension in children.
mesh_terms: D002648:Child; D004311:Double-Blind Method; D006801:Humans; D006976:Hypertension, Pulmonary / Q000188:drug therapy*; D010879:Piperazines / Q000009:adverse effects* / Q000627:therapeutic use; D011687:Purines / Q000009:adverse effects / Q000627:therapeutic use; D000068677:Sildenafil Citrate; D013450:Sulfones / Q000009:adverse effects* / Q000627:therapeutic use; D014665:Vasodilator Agents / Q000009:adverse effects* / Q000627:therapeutic use
chemical_list: D010879:Piperazines; D011687:Purines; D013450:Sulfones; D014665:Vasodilator Agents; D000068677:Sildenafil Citrate