1. A. U. Neumann, Department of Life Sciences, Bar-Ilan University, Ramat-Gan 52900, Israel, and Santa Fe Institute, Santa Fe, NM 87501, USA. N. P. Lam, Department of Pharmacy Practice, University of Illinois, Chicago, IL 60612, USA. H. Dahari, Department of Life Sciences, Bar-Ilan University, Ramat-Gan 52900, Israel. D. R. Gretch, Hepatitis Laboratory, University of Washington, Seattle, WA 98144, USA. T. E. Wiley and T. J. Layden, Section of Digestive and Liver Diseases, Department of Medicine,...