1. Clinical Investigation Facility, David Grant USAF Medical Center, 101 Bodin Circle, Travis Air Force Base, CA
2. Department of Surgery, 1 Medical Center Blvd, Winston-Salem, NC
3. Department of General Surgery, David Grant USAF Medical Center, 101 Bodin Circle, Travis Air Force Base, CA
4. Department of Surgery, University of California Davis Medical Center, 2315 Stockton Blvd, Sacramento, CA
5. Department of Surgery, Wright State University, 3640 Colonel Glenn Hwy, Dayton, OH
6. Department of Surgery, Emory University Hospital, 1364 Clifton Rd, Atlanta, GA
7. Uniformed Services University of the Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD
8. Department of Emergency Medicine, University of California Davis Medical Center, 2315 Stockton Blvd, Sacramento, CA