Drupal-Bibcite0<style face="normal" font="default" size="100%">Design and challenges of the Randomized Evaluation of Normal versus Augmented Level replacement therapy (RENAL) trial: High-Dose versus standard-Dose Hemofiltration in Acute Renal Failure</style><style face="normal" font="default" size="100%">Design and challenges of the Randomized Evaluation of Normal versus Augmented Level replacement therapy (RENAL) trial: High-Dose versus standard-Dose Hemofiltration in Acute Renal Failure</style>