Erectile Dysfunction Warning Signs
Notify your doctor if you have impotence and develop any of the following:
Continue to Erectile Dysfunction Outlook
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- Heaton JP, Morales A. Endocrine causes of impotence (nondiabetes). Urol Clin North Am. 2003 Feb;30(1):73-81. 
- Tengs TO, Osgood ND. The link between smoking and impotence: two decades of evidence. Prev Med. 2001 Jun;32(6):447-52.