[1] NIDDK, Liver Dis Sect, NIH, Bethesda, MD 20892 USA
[2] Univ Cologne, Ctr Mol Med, Cologne, Germany
[3] Univ Louisiana, New Iberia Res Ctr, Lafayette, LA USA
[4] Rockefeller Univ, Ctr Study Hepatitis C, New York, NY USA
[5] US FDA, Ctr Biol Evaluat & Res, Lab Hepatitis Viruses, Bethesda, MD USA