Ravani Pietro, Parfrey Patrick S, Curtis Bryan, Barrett Brendan J
Clinical Epidemiology Unit, Faculty of Medicine, Memorial University of Newfoundland, Canada, and Divisione di Nefrologia, Azienda Istituti Ospitalieri di Cremona, Italy.
Nephrol Dial Transplant. 2007 Sep;22(9):2459-68. doi: 10.1093/ndt/gfm432.