title: Reply.
authors.affiliation: National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD.
authors.forename: Michael M
authors.initials: MM
authors.lastname: Ward
authors.affiliation: National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD.
authors.forename: Abhijit
authors.initials: A
authors.lastname: Dasgupta
authors.affiliation: University of Athens Medical School, Athens, Greece.
authors.forename: Maria
authors.initials: M
authors.lastname: Tektonidou
mesh_terms: D001499:Bayes Theorem; D006801:Humans; D007676:Kidney Failure, Chronic; D008181:Lupus Nephritis