García-Bravo, A M Determination of changes in blood pressure during administration of sildenafil (Viagra) in patients with spinal cord injury and erectile dysfunction. [electronic resource] - Spinal cord May 2006 - 301-8 p. digital Publication Type: Clinical Trial; Comparative Study; Journal Article ISSN: 1362-4393 Standard No.: 10.1038/sj.sc.3101846 doi Subjects--Topical Terms: AdultBlood Pressure--drug effectsErectile Dysfunction--drug therapyHumansMaleMiddle AgedPhosphodiesterase Inhibitors--therapeutic usePiperazines--therapeutic useProspective StudiesPurinesSeverity of Illness IndexSildenafil CitrateSpinal Cord Injuries--complicationsSulfonesTime FactorsTreatment Outcome