1. Department of Surgery, NYU Grossman School of Medicine, New York, NY, USA
2. Center for Health Services and Outcomes Research, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
3. Walter Reed National Military Medical Center, Bethesda, MD, USA
4. The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Rockville, MD, USA
5. Northwestern University Feinberg School of Medicine, Chicago, IL, USA
6. Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
7. Department of Surgery and Center for Biomedical Ethics and Society, Vanderbilt University Medical Center, Nashville, TN, USA