title: First time stones.
authors.affiliation: Department of Urology, Northwestern University, Feinberg School of Medicine, Chicago, Illinois.
authors.forename: Barry
authors.initials: B
authors.lastname: McGuire
authors.affiliation: Department of Urology, Northwestern University, Feinberg School of Medicine, Chicago, Illinois.
authors.forename: Kent
authors.initials: K
authors.lastname: Perry
authors.affiliation: Department of Urology, Loyola University Medical Center, Chicago, Illinois.
authors.forename: Thomas T
authors.initials: TT
authors.lastname: Turk
mesh_terms: D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D053040:Nephrolithiasis / Q000175:diagnosis* / Q000453:epidemiology / Q000378:metabolism* / Q000628:therapy*; D017410:Practice Guidelines as Topic; D015995:Prevalence; D012008:Recurrence; D012307:Risk Factors; D014481:United States / Q000453:epidemiology