[1] UCL, Royal Free Hosp, Lysosomal Storage Disorders Unit, Sch Med, London NW3 2QG, England
[2] Dalhousie Univ, Div Nephrol, Halifax, NS, Canada
[3] Germans Trias & Pujol Univ Hosp, Dept Pediat, Badalona, Spain
[4] Hosp Britan, Dept Neurol, Buenos Aires, DF, Argentina
[5] Royal Melbourne Hosp, Dept Nephrol, Parkville, Vic 3050, Australia
[6] CIBO IMSS, Div Genet, Guadalajara, Jalisco, Mexico
[7] Osped San Gerardo, Clin Pediat, Monza, Italy
[8] STRO, Mainz, Germany
[9] Klinikum JG Univ, Kinderklin & Poliklin, Mainz, Germany
[10] NYU, Sch Med, Dept Neurogenet, New York, NY USA
[11] NYU, Sch Med, Dept Pediat, New York, NY USA
[12] Hop Bichat Claude Bernard, Dept Internal Med, F-75877 Paris, France