1. Department of Immunology, Mayo Clinic and Mayo Foundation, Rochester, MN 55905.
2. Department of Chemistry, Indiana University, Bloomington, IN 47405.
3. Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90024.
4. Department of Oncology, Mayo Clinic and Mayo Foundation, Rochester, MN 55905.
5. Acute Disease Epidemiology Section, Minnesota Department of Health, Minneapolis, MN 55440.