Butler Paris D, Chang Benjamin, Britt L D
Department of Surgery, University of Pennsylvania Health System, Philadelphia, PA.
Department of Surgery, University of Pennsylvania Health System, Philadelphia, PA.
J Am Coll Surg. 2014 May;218(5):1049-55. doi: 10.1016/j.jamcollsurg.2013.12.049. Epub 2014 Feb 12.