Randomized, Double-Blind, Placebo-Controlled Trial of Sildenafil (Viagra®) for Erectile Dysfunction After Rectal Excision for Cancer and Inflammatory Bowel Disease

Abstract
PURPOSE:Controlled trials have demonstrated the efficacy of sildenafil for “mixed etiology” erectile dysfunction, but this may not be the case if there is underlying pelvic parasympathetic nerve damage. We aimed to determine the efficacy of sildenafil after rectal excision for rectal cancer

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