title: The author replies.
authors.affiliation: Division of Nephrology, St. Michael's Hospital, Toronto, ON, Canada.
authors.forename: Ron
authors.initials: R
authors.lastname: Wald
mesh_terms: D058186:Acute Kidney Injury / Q000453:epidemiology*; D016638:Critical Illness / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D017582:Renal Replacement Therapy / Q000706:statistics & numerical data*