The Journal of Sexual Medicine · 2013 · 157 citations · 32 references
This exploratory analysis showed that one in four patients seeking first medical help for new onset ED was younger than 40 years. Almost half of the young men suffered from severe ED, with comparable rates in older patients. Overall, younger men differed from older individuals in terms of both clinical and sociodemographic parameters.
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Sexual Dysfunction in the United States
Edward O. Laumann, Anthony Paik, Raymond C. Rosen · JAMA · 1999 · 5.1K citations