The cost to the United Kingdom National Health Service of managing erectile dysfunction: The impact of sildenafil and prescribing restrictions
Wilson EC et al. The cost to the United Kingdom National Health Service of managing erectile dysfunction: the impact of sildenafil and prescribing restrictions. Pharmacoeconomics 2002; 20: 879-889.
Treatment satisfaction in patients with erectile dysfunction switching from prostaglandin E(1) intracavernosal injection therapy to oral sildenafil citrate
Montorsi F et al. Treatment satisfaction in patients with erectile dysfunction switching from prostaglandin E(1) intracavernosal injection therapy to oral sildenafil citrate. Int J Impot Res 2003; 15: 444-449.
Clinical efficacy of sildenafil citrate based on etiology and response to prior treatment
Jarow JP, Burnett AL, Geringer AM. Clinical efficacy of sildenafil citrate based on etiology and response to prior treatment. J Urol 1999; 162: 722-725.
What we learn about sildenafil in the treatment of erectile dysfunction from 3-year clinical practice
Jiann BP et al. What we learn about sildenafil in the treatment of erectile dysfunction from 3-year clinical practice. Int J Impot Res 2003; 15: 412-417.