title: When normal is not enough.
authors.affiliation: Mater Misericordiae University Hospital & Mater Private, Dublin, Ireland.
authors.forename: Paul K
authors.initials: PK
authors.lastname: Hegarty
mesh_terms: D006801:Humans; D008297:Male; D010410:Penile Erection / Q000502:physiology*; D010413:Penis / Q000033:anatomy & histology*