Flum David R, Fisher Nancy, Thompson Jeffery, Marcus-Smith Miriam, Florence Michael, Pellegrini Carlos A
Department of Surgery and the Surgical Outcomes Research Center, and the Department of Health Services, University of Washington, Seattle, Washington 98195-6410, USA.
Surgery. 2005 Nov;138(5):821-8. doi: 10.1016/j.surg.2005.07.026.