title: Editorial comment.
authors.affiliation: Division of Urology, Hospital for Sick Children and University of Toronto, Toronto, Ontario, Canada.
authors.forename: Armando J
authors.initials: AJ
authors.lastname: Lorenzo
mesh_terms: D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000601:surgery*; D008297:Male; D009392:Nephrectomy / Q000379:methods*; D009399:Nephrons / Q000601:surgery*; D018426:SEER Program; D009396:Wilms Tumor / Q000601:surgery*