Usman Asad A, Tang Gale L, Eskandari Mark K
Division of Vascular Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
J Am Coll Surg. 2009 Jun;208(6):1124-31. doi: 10.1016/j.jamcollsurg.2009.02.043. Epub 2009 Apr 9.