1. Department of Surgery, Wisconsin Surgical Outcomes Research Program, University of Wisconsin-Madison , Madison, WI, USA
2. Department of Biostatistics & Medical Informatics, University of Wisconsin-Madison , Madison, WI, USA
3. Department of Health Policy and Administration, Penn State University , State College, PA, USA
4. Survey Research Center, Institute for Social Research, University of Michigan , Ann Arbor, MI, USA
5. Department of Radiology, University of Wisconsin-Madison , Madison, WI, USA
6. Department of Oncology, Mayo Clinic Comprehensive Cancer Center , Rochester, MN, USA
7. Department of Medical Oncology, Dana-Farber Cancer Institute , Boston, MA, USA
8. Department of Medicine, Brigham and Women's Hospital, Harvard Medical School , Boston, MA, USA
9. Department of Surgical Oncology, Roswell Park Comprehensive Cancer Center , Buffalo, NY, USA
10. Department of Medicine, The University of Texas at Austin , Austin, TX, USA
11. Commission on Cancer, American College of Surgeons , Chicago, IL, USA
12. Department of Surgery, Wright State University , Dayton, OH, USA
13. Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill , Chapel Hill, NC, USA
14. Department of Surgery, Washington University School of Medicine in St. Louis , St. Louis, MO, USA
15. Department of Colon and Rectal Surgery, The University of Texas MD Anderson Cancer Center , Houston, TX, USA
16. Department of Surgery, University of North Carolina at Chapel Hill , Chapel Hill, NC, USA