1. Immunogenetics Group, Immunity, Inflammation and Disease Laboratory, NIEHS, National Institutes of Health, Research Triangle Park, Durham, North Carolina 27709, United States
2. Jagiellonian University Medical College, 30-688 Krakoẃ, Poland
3. Laboratory of Bioorganic Chemistry, Molecular Recognition Section, NIDDK, National Institutes of Health, Bethesda, Maryland 20892, United States