title: The authors reply.
authors.affiliation: Division of Pediatric Nephrology, Department of Pediatrics, Lausanne University Hospital, Lausanne, Switzerland.
authors.forename: Hassib
authors.initials: H
authors.lastname: Chehade
authors.affiliation: Division of Pediatric Nephrology, Department of Pediatrics, Lausanne University Hospital, Lausanne, Switzerland.
authors.forename: Eric
authors.initials: E
authors.lastname: Girardin
authors.affiliation: CRC and Division of Clinical-Epidemiology, Department of Health and Community Medicine, University of Geneva and University Hospitals of Geneva, Genève, Switzerland.
authors.forename: Anne S
authors.initials: AS
authors.lastname: Jannot
mesh_terms: D005260:Female; D005919:Glomerular Filtration Rate; D006801:Humans; D008297:Male