Krouse Robert S, Jonasson Olga, Milch Robert A, Dunn Geoffrey P
Southern Arizona Veterans Affairs Health Care System, and the Department of Surgery, University of Arizona, Tucson, AZ 85723, USA.
J Am Coll Surg. 2004 Jan;198(1):149-55. doi: 10.1016/j.jamcollsurg.2003.09.018.