title: PDE-5 inhibitors: spoilt for choice.
authors.forename: M G
authors.initials: MG
authors.lastname: Kirby
mesh_terms: D007172:Erectile Dysfunction / Q000188:drug therapy*; D006801:Humans; D008297:Male; D010726:Phosphodiesterase Inhibitors / Q000627:therapeutic use*; D016032:Randomized Controlled Trials as Topic; D016896:Treatment Outcome
chemical_list: D010726:Phosphodiesterase Inhibitors