title: Editorial comment.
authors.affiliation: Department of Urology, University of Michigan Health System, Ann Arbor, Michigan.
authors.forename: Kate H
authors.initials: KH
authors.lastname: Kraft
mesh_terms: D003456:Cryptorchidism / Q000473:pathology*; D005298:Fertility / Q000502:physiology*; D006801:Humans; D008297:Male; D013093:Spermatogonia / Q000473:pathology*; D013737:Testis / Q000473:pathology*