1. Department of Surgery; University of California at Los Angeles; Los Angeles California
2. Department of Surgery; University of Virginia; Charlottesville Virginia
3. Department of Medical Affairs, Biom'up; Lyon France
4. NAMSA, Clinical and Consulting; Minneapolis Minnesota
5. Department of Orthopaedic Surgery; Duke University School of Medicine; Durham North Carolina
6. Department of Surgery; Washington University School of Medicine; St. Louis Missouri
7. General Orthopedics and Surgery; Spectrum Medical; Danville Virginia
8. Department of Surgery; Huntington Hospital; Pasadena California
9. Department of Surgery; Queens Hospital; Honolulu Hawaii
10. Department of Research and Development, Biom'up; Lyon France
11. Department of Statistics, Department of Epidemiology; University of California at Irvine; Irvine California