Erectile dysfunction.
D015984:Causality; D007172:Erectile Dysfunction / Q000175:diagnosis / Q000209:etiology / Q000628:therapy*; D006801:Humans; D008019:Life Style; D008297:Male; D010726:Phosphodiesterase Inhibitors / Q000627:therapeutic use; D012017:Referral and Consultation
D010726:Phosphodiesterase Inhibitors