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1. Althof SE, Corty EW, Levine SB, et al. EDITS: development of questionnaires for evaluating satisfaction with treatments for erectile dysfunction. Urology. Apr 1999;53(4):793-9. [Medline].

2. American Foundation for Urologic Disease. American Foundation for Urologic Disease. Available at http://www.afud.org/.

3. Andersson KE, Wagner G. Physiology of penile erection. Physiol Rev. Jan 1995;75(1):191-236. [Medline].

4. Cheitlin MD, Hutter AM Jr, Brindis RG, et al. ACC/AHA expert consensus document. Use of sildenafil (Viagra) in patients with cardiovascular disease. American College of Cardiology/American Heart Association. J Am Coll Cardiol. Jan 1999;33(1):273-82. [Medline].

5. FDA Center for Drug Evaluation and Research. FDA Center for Drug Evaluation and Research. Available at http://www.fda.gov/cder/.

6. Feldman HA, Goldstein I, Hatzichristou DG, et al. Impotence and its medical and psychosocial correlates: results of the Massachusetts Male Aging Study. J Urol. Jan 1994;151(1):54-61. [Medline].

7. Laumann EO, Paik A, Rosen RC. Sexual dysfunction in the United States: prevalence and predictors. JAMA. Feb 10 1999;281(6):537-44. [Medline].

8. Leslie S. Impotence: current diagnosis and treatment. 1997.

9. National Kidney and Urologic Diseases Clearinghouse. National Kidney and Urologic Diseases Clearinghouse. Available at http://kidney.niddk.nih.gov/.

10. NIH Consensus Conference. Impotence. NIH Consensus Development Panel on Impotence. JAMA. Jul 7 1993;270(1):83-90. [Medline].

11. Pfizer Inc. Pfizer Inc. Available at http://www.pfizer.com/pfizer/main.jsp.

12. Segraves RT, Bari M, Segraves K, Spirnak P. Effect of apomorphine on penile tumescence in men with psychogenic impotence. J Urol. Jun 1991;145(6):1174-5. [Medline].

13. The European Alprostadil Study Group. The long-term safety of alprostadil (prostaglandin-E1) in patients with erectile dysfunction. Br J Urol. Oct 1998;82(4):538-43. [Medline].

14. The Process of Care Consensus Panel. The process of care model for evaluation and treatment of erectile dysfunction. Int J Impot Res. Apr 1999;11(2):59-70; discussion 70-4. [Medline].

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Erectile Dysfunction FAQs Erectile dysfunction (or ED), also called male impotence, describes a man's inability to achieve and maintain an erection of his penis sufficient for mutually s...learn more >>

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