Acute renal failure in patients with severe sepsis and septic shock–a significant independent risk factor for mortality: results from the German Prevalence Study - Oppert, Michael; Engel, Christoph; Brunkhorst, Frank-Martin; Bogatsch, Holger; Reinhart, Konrad; Frei, Ulrich; Eckardt, Kai-Uwe; Löffler, Markus; John, Stefan (Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association, 2007)