title: The evolution of ED therapy in the 21st century.
authors.forename: Gerald
authors.initials: G
authors.lastname: Brock
mesh_terms: D004730:Endothelium, Vascular / Q000187:drug effects / Q000503:physiopathology; D007172:Erectile Dysfunction / Q000503:physiopathology / Q000628:therapy*; D015316:Genetic Therapy / Q000639:trends*; D006801:Humans; D008297:Male; D010726:Phosphodiesterase Inhibitors / Q000627:therapeutic use*; D011379:Prognosis; D014664:Vasodilation / Q000502:physiology
chemical_list: D010726:Phosphodiesterase Inhibitors