title: Letter to the editor on 'Sildenafil in spinal cord injury' by Khorrami et al. (2009).
authors.forename: Paul R
authors.initials: PR
authors.lastname: Tophill
authors.forename: Kate D
authors.initials: KD
authors.lastname: Linton
mesh_terms: D007172:Erectile Dysfunction / Q000188:drug therapy* / Q000209:etiology; D006801:Humans; D008297:Male; D010410:Penile Erection / Q000502:physiology*; D010879:Piperazines / Q000627:therapeutic use*; D010919:Placebos; D011687:Purines / Q000627:therapeutic use; D012018:Reflex; D000068677:Sildenafil Citrate; D013119:Spinal Cord Injuries / Q000150:complications*; D013450:Sulfones / Q000627:therapeutic use*
chemical_list: D010879:Piperazines; D010919:Placebos; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate