1. Sexual dysfunction in the United States: prevalence and predictors;Laumann;JAMA,1999
2. The likely worldwide increase in erectile dysfunction between 1995 and 2025 and some possible policy consequences;Ayta;BJU Int,1999
3. Impotence and its medical and psychosocial correlates: results of the Massachusetts Male Aging Study;Feldman;J Urol,1994
4. Self-esteem, confidence and relationship satisfaction of men with erectile dysfunction treated with sildenafil citrate: a multicenter, randomized, parallel group, double-blind, placebo controlled study in the United States;O’Leary;J Urol,2006
5. Erectile dysfunction;McVary;N Engl J Med,2007