1. Division of Space Life Sciences, Universities Space Research Association, Houston, TX
2. Wyle Science, Technology and Engineering Group, Houston, TX, and Coastal Eye Associates, Webster, TX
3. Alaska Native Medical Center, Anchorage, AK
4. Department of Chemistry, Indiana University-Purdue University Fort Wayne, Fort Wayne, IN
5. University of Bonn, Bonn, Germany, and Profil Institute for Metabolic Research GmbH, Neuss, Germany
6. Human Adaptation and Countermeasures Division, Space Life Sciences Directorate, National Aeronautics and Space Administration Johnson Space Center, Houston, TX