Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania. Electronic address: courcoulasap@upmc.edu. Department of Epidemiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania. Department of Surgery, University of Michigan, Ann Arbor, Michigan. Department of Surgery, Weill Cornell Medical College, New York, New York. Department of Surgery, University of Washington, Seattle, Washington. School of Nursing, Duquesne University, Pittsburgh, Pennsylvania. Department of Neuroscience, Neuropsychiatric Research Institute, Fargo, North Dakota. Department of Medicine, Legacy Good Samaritan Hospital, Portland, Oregon. Department of Surgery, East Carolina University, Greenville, North Carolina. Department of Pharmaceutical Sciences North Dakota State University, Fargo, North Dakota.