325. Risk Factors Associated with Multidrug-Resistant Gram-Negative Bacilli Colonization in Wounded Military Personnel Deployed to Iraq and Afghanistan Laura Gilbert, MD; Ping Li, MS; Clinton K. Murray, MD; Heather Yun, MD; Deepak Aggarwal, MSE, MSPH; David Tribble, MD, DrPH; Amy Weintrob, MD; IDCRP TIDOS working group; Medicine, Walter Reed National Military Medical Center, Bethesda, MD; Infec...