1. KBR, Houston, Texas
2. Institute of Biomedical Problems of the Russian Academy of Sciences, Moscow, Russian Federation
3. University Hospital Trousseau, Tours, France
4. National Aeronautics and Space Administration, Johnson Space Center, Houston, Texas
5. Applied Biostatistics Laboratory, School of Nursing, University of Michigan, Ann Arbor
6. Department of Surgery, Henry Ford Hospital, Detroit, Michigan
7. Department of Orthopaedic Surgery, UC San Diego Medical Center, University of California, San Diego