title: Editorial comment.
authors.affiliation: Department of Urology, University of Michigan, Ann Arbor, Michigan, USA.
authors.forename: Julian
authors.initials: J
authors.lastname: Wan
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D049451:Nomograms; D012212:Rheology / Q000379:methods*; D014554:Urination / Q000502:physiology*