University of Chicago - Department of Surgery, University of Chicago - Department of Medicine, University of Chicago - Department of Medicine, University of Chicago - Department of Pathology, University of Chicago - Department of Medicine, University of Chicago - Biological Sciences DivisionUniversity of Chicago - Department of Medicine, University of Chicago - Department of Pathology, University of Chicago - Department of Surgery, University of Chicago - Department of Surgery, University of Chicago - Department of Surgery, University of Chicago - Department of Surgery, University of Chicago - Department of Surgery, University of Chicago - Section of Rheumatology, University of Chicago - Committee on Immunology, University of Chicago - Committee on Immunology, University of Chicago - Section of Rheumatology, University of Chicago - Department of Medicine, University of Chicago - Department of Medicine, University of Chicago - Department of Medicine, University of Chicago - Section of Rheumatology, University of Chicago - Clinical Microbiology and Immunology Laboratory, University of Chicago - Clinical Microbiology and Immunology Laboratory, University of Chicago - Department of Pathology, University of Chicago - Department of Surgery, University of Chicago - Department of Surgery, University of Chicago - Department of Medicine, University of Chicago - Department of Surgery, University of Chicago - Department of Surgery, University of Chicago - Department of Surgery, University of Chicago - Section of Rheumatology, University of Chicago - Department of Surgery and University of Chicago - Department of Surgery