0 Steinberg, KP Hudson, LD Goodman, RB Hough, CL Lanken, PN Hyzy, R Thompson, BT Ancukiewicz, M NIH / NHLBI ARDSNet 2006 Efficacy and Safety of Corticosteroids for Persistent Acute Respiratory Distress Syndrome New Engl J Med 354 16 1671-1684 May 25