title: Introduction.
authors.affiliation: Hopital Doumergue 5, Nimes, Cedex 4, France. pierre.costa@chu-nimes.fr
authors.forename: P
authors.initials: P
authors.lastname: Costa
mesh_terms: D007172:Erectile Dysfunction / Q000188:drug therapy* / Q000453:epidemiology*; D006801:Humans; D008297:Male; D012307:Risk Factors