Erectile dysfunction: can it be prevented?
D000367:Age Factors; D007172:Erectile Dysfunction / Q000453:epidemiology / Q000209:etiology / Q000517:prevention & control*; D006801:Humans; D008019:Life Style; D008297:Male; D010410:Penile Erection / Q000502:physiology; D012307:Risk Factors; D014481:United States / Q000453:epidemiology