1. The Hormel Institute, University of Minnesota, 801 16th Avenue NE, Austin, Minnesota 55912, United States
2. Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russian Federation
3. Mayo Clinic Division of Hematology, 150 Third Street SW, Stabile Building, Rochester, Minnesota 55905, United States
4. Graduate School of Pharmaceutical Sciences, Chiba University, Inohana 1-8-1, Chuo-ku, Chiba 260-8675, Japan