title: Erectile dysfunction.
authors.forename: M
authors.initials: M
authors.lastname: Hagland
mesh_terms: D000368:Aged; D001808:Blood Vessels / Q000503:physiopathology; D007172:Erectile Dysfunction / Q000188:drug therapy* / Q000453:epidemiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010726:Phosphodiesterase Inhibitors / Q000009:adverse effects / Q000627:therapeutic use; D010879:Piperazines / Q000009:adverse effects / Q000627:therapeutic use; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones; D016896:Treatment Outcome; D014481:United States / Q000453:epidemiology
chemical_list: D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate